I do not think “generosity” of any sort plays in here. They’re not considering leaving for personal reasons but deciding to stay to provide tax dollars to the state. They’re staying because they want to. They like it here, or it works well for their business to be here. I don’t see any reason to believe that generosity plays in to it. California, despite high taxes, is simply a nice place to live.

Yes. A choice based on the fact that it’s an extremely nice place to live. I have never met or heard of a person who said “I’d like to leave but I don’t want the state of California to lose out on my tax dollars”.

I think the parent was referencing fake non profit organization, I don't know for USA but in europe it's a 'classical' tax avoidance trick going from 'having a charity which goal is to allow you to particpace in pricey leisure activities (work for mechanical sports for exemple) to the infamous Ikea tax evasion scheme, here is a random article talking about it but you have lot other if the subject interest you : https://www.fastcompany.com/3035734/ikea-is-a-nonprofit-and-.... Take care the worl is a little bit darker after ^^.