> I can't speak for anyone else, but I don't mind at all when an open source project switches licenses or whatever. They gave away the fruit of their labor, but I am not entitled to any more of it

It only bothers me when they try to claim their new license is open source or use misleading language when it isn't. Which seems to be what 90% companies doing that do.

People can do whatever they want with their intellectual property as long as they aren't lying about it.