>Everything you can do with closed source software you can also do with open, and there are things you can't do with closed source.

This is just not true. Show me a completely open source smart phone... thing is you can't, the baseband and radio will always for sure be closed source. There are markets where having knowledge that your competition doesn't is vital to success, that is why some things will always be closed source.

A closed source project can license closed source technology and save development costs while avoiding putting 1.0 code for an edge case into their core product. The exchange of money helps keep the interest in support, maintenance, and extension by those who first developed the technology.

The choice is "sometimes I don't want to distribute my code."

You can use it, or you can not.