GPL is also a possible alternative. Big companies pay you back by contributing to the project, insofar as it is worth it to them to maintain a fork and add features for their own use.
I think it might be time to upgrade GPL to the age of modern internet, and have licenses requiring that modification are actually PR-ed (or sent by mail or whatever) to the author.
Hell I'd even think that there could be licenses where you are required to use mainline for anything remotely looking like production, and you are not allowed to fork, you're only allowed to use as-is, and to contribute. This one would definitely not be considered FLOSS, but some components really would benefit from not having an infinite number of forks, like the Linux kernel.