A functioning economy is full of these tensions between people with divergent "desired end goals". Everybody wants high home prices when they want to sell but low home prices when their kids want to buy. Everybody wants low prices for things but high wages for people, even though those things are inversely correlated. I'd bet many of the parents you're talking about voted for NIMBY policies and cheered the tech industry's rise. Of course they would. If I'd owned a house in the bay, I'd have been pretty jazzed about it too.

I'm not pro-displacement. I'm pro-housing, which we need much more of in SF.