[vtange]

Are there any stories/examples of MIT-licensed projects being subject to hostile take-overs?

Also if it's you are the originator of a project what's stopping you from using the GPL license but not disclosing your own source while you commercialize?

[z3t4]

For example xamarin's fork of Cocos2D.

Or companies adding closed source features to open source software. You can't do that with GPL unless you own all the code.

The classic business plan for software is to charge per license/copy. But if you release your software for free, you have to sell something else. And anyone who come up with a good solution for this will be the next unicorn.