It is because for Big projects needs to work in teams, So it can't be given to individuals and also communication problems etc.
It is a fact that many business projects fail either partially or completely. Many studies demonstrate this. And I suspect that many of those failures are attributed to project management failures.
Thus a project manager probably isn't the best source to evaluate why a broad category of projects fail.
Below is one stat for Apache server, which is a public domain and open source server. From it 60% usage from the top (usage) 10 million web sites in the world. How do those "project managers" explain that success? (There are a vast number of addons for apache.) There are many more examples of this.
One reason individual projects fail is just due to lack of interest when there are very few participants. An initial project needs several dedicated enthusiasts who spend years actively supporting a project until many people start using it. If the first doesn't happen then the second wont.
I am not going to research it in detail but I know for a fact that there used to be a free shopping cart system written in perl. There might be something now in a different language. You can try googling for that.
* It's become very easy + cheap to post a project on these sites. So the sites fill up with thousands of tentative projects, from buyers who don't really know what they want and don't care much about the outcome. The "real" projects get swamped and unless you check each site multiple times per day, they very quickly end up a long way down any result lists.
* "Real" projects tend to be posted by people who know what they're doing and how to do it, and who've been doing it for years. They will have built up networks of people they know and trust, and they either go direct to them or offer "Private" auctions to just those invited bidders.
* Auction sites are cheap for small projects. But once you get above a certain size, they can become very expensive indeed, for both buyer and seller. A fixed-price $500 job is worth bidding on - but when you need a 20-strong team for a year, it's cheaper to go down the traditional agency route.
* Big projects tend to be started by big companies. They will have HR departments, preferred-supplier lists, suitability requirements, plus a whole raft of legislation and tax considerations to worry about. Picking up an un-identifiable individual via an auction site is so far off their modus operandi as to be unthinkable for them.
There's not actually any reason why teams can't be composed of remote-working individuals, even across time-zones. It can be done, if you pick freelancers with the appropriate skills and motivation. In fact it can be an extremely efficient way of working - I've built projects myself as a buyer by outsourcing very specific tasks to developers across the globe. If co-ordinated well, they don't need to communicate and there is zero interruption + distraction. But you need very good specifications!
In working through these sites over a long period, I've come across some really big projects. Some were, as above, highly compartmentalised, and I contributed a small cog in a big wheel. Others were very closely managed. Most, though, start off as a small - even tiny - task but then morph - off the original site - into something very much larger. The sites will all have rules about not taking work off-site, and definitely discourage (often with good reason) users from doing this (lack of financial escrow being the main one). However depending on the situation it's certainly possible to do so without infringing T+Cs and I've had long-term clients who originally "found" me through one or other of the type of sites you mention, and which have been financially very lucrative. Don't discount those "micro" projects, they may be the tip of an iceberg.
Freelancing since 1995, since 2000 nearly all my paid work has been sourced via job auction sites. I was top-ranked UK developer on (the original) Rent-A-Coder site for quite a while, and in 2009 came top in the UK-wide BT-sponsored Remote Employment Awards in the Freelance Consultant category. Although now semi-retired, I continue to get some work via these sites - and by (importantly!) referrals from old clients I picked up there.
i am a software developer in Visual basic 6.0. i want to know that may i need any licencee from microsoft to develop any application in vb 6. if yes, please let me inform that from where i can can purchase this paper licence, because microsoft has already stopped the services from vb 6.
VB 6.0 is long dead so I doubt that Microsoft would care what you developed with it. You should also be aware that no business is likely to want to buy applications developed in such an old and unsupported language.
I've working alone in my web business for quite long, and I'm willing to start a bigger project that will need to involve more coders.
I hire frelancer from time to time, but I will need now more than one coder and designer working together in the same project. What could be the better way to manage this team of remote workers? is there any web solutions to manage that? How can I do it knowing that they will not steal the project?
Check out CloudForge. It supports both svn and git for scm. The basic version is free and allows unlimited users and private repos. The paid version has access control and permissions. It sounds like that is what you are looking for? It also has an Agile tracker and other tools for project management. Hope this helps.
well you need to find people who are into this as much as you are i am also in same kind of trouble i am also starting an e commerce startup but i am also short on work force if you like you can give me an email on firstname.lastname@example.org so we can see if we can help each other
how, and what python can help me setup a business?
It is most unlikely that Python can help you set up a business. Starting in business you first need to find an idea that you can market and people will pay for. It could be a manufactured product, food that is grown, or some type of service, but you need the idea and a business plan first.
A business is selling either a product and/or a service.
You must come up with the idea then do some work towards creating the product and/or service. Then you must sell either the product and/or service to someone or even sell the idea to someone.
Python, or any programming language can be used to create the product, to create the service, to manage the business and/or to manage the service. It can also be used to create a demonstration which represents how the product and/or service would work if it was fully implemented.