This is itself, but I think if a marketing company will be held, plus favorable conditions for authors are created, then this all should work fine and users will have a lot

Well, if a person takes open source and changes it a little then it will be his development such as browser Chrome or the like

In fact, there were no projects like this. There were projects whose separate functions are similar, but everything will be assembled together into a single ecosystem.

Well, let's see how the society will react to such developments, after entering the exchange. I think time will tell. But for now I will follow the news of the project.

Usually even approximate profit are not said. A lot of  depends from the platform development and business development. It is very hard to predict profit. If you get it wrong you will be called a liar.

You cannot begin to develop a project if you do not know at least approximately what income is planned. It is important for investors to have such information. The system implementation strategy should be based on calculations. I think the developers may have such information.

I understand that the creators of the idea can turn to this system to help in the completion of a project that can not finish themselves? You expose your idea on the site and everyone can help you. Who guarantees successful completion of the process?

Many young programmers have good ideas. Such a system will help their further development. Also selling their ideas on the marketplace gives a chance to projects that have not yet been known. Good idea.

Yes, in our time talented programmers enough. Only not each of them has a good opportunity to advertise their skills and ideas.