> Those corporations that are violating the license aren't contributing back to Linux anyway; so losing them won't kill Linux.

I don't think that's what the grandparent was worried about. If the kernel developers defend the GPL too ardently, some companies that currently contribute, or that are considering contribution, may be worried about violating the license and decide that it's in their best interests to avoid Linux altogether. I agree that it wouldn't actually kill Linux, but it could potentially do more harm than good by scaring away potential contributors that are a little more on the fence.