You hope the idea that "commerical companies that have profited off of FOSS feel compelled and pledge to contribute to the maintainence and development of those projects" doesn't catch on?
And tolerant people should be tolerant, except when met with intolerance. If people are leveraging other people's good will both selfishly and expansively, why should you let them continue to do it?
This stifles the project in no way, the small individuals that use it will still use be able to use it.