This "threat" stings less and less over time - i.e., if we get nothing from them now in taxes, then how would them moving away change anything? Like, would we pay higher amounts for food maybe, or not be able to buy a house anymore, or have lesser access to medical care as a result?
Also, we cannot change how others act, only what we ourselves do. e.g. perhaps if they become honest about being non-taxpaying corporations, we could do things like pass laws restricting the amount of money that such entities could contribute to politicians?
Ultimately, would it be so bad if like "Apple" were a non-American company anymore, and we could incentive our own USA-backed companies instead? (or if Apple does pay appropriate taxes, then substitute with some other company example here) Likewise, Google already is losing its ability to "find stuff", b/c of its chasing after pure profiteering. Let them go, I say, b/c while that may induce some pain in the short-term, it is the only way that we will heal.
But, I have been wrong before, and you should not base any real decisions off of my opinion:-).
At the same time, his leaving was also a success story in itself. He had all the money he ever needed in life, he was at the top of his game except just was exhausted working that continual grind, and was feeling his age so unlike e.g. any member of Congress, decided to voluntarily relinquish his power in order to create room for new people to step up, while he went on to blaze entirely new pioneer territory outside of mainstream TV, which was quite a risk even for someone like him. Wow... what a class act! 😍