Because tech CEOs have decided to go all-in on fascism as they see it's a way to make money. Bow to Trump, get on his good side, reap the benefits of government corruption.
It's why TikTok thanked Trump in their boot-licking message of "thanks, trump" after he was the one who started the TikTok ban.
A harder question is: why wouldn't billionaires like Trump and his oligarchic kleptocracy?