In a world of money, every bit you can earn, you have to earn, while I know it is immoral to sell the data for spying purposes, morality alone don't mean shit now, that I never see any capitalists and corpo dogs have any kind of morality anyway, except when massive backslash, congress hearings and boycotts, which is, ahem, Meta/Facebook and Cambridge Analytica. But given the unique position Musk used to have in Trump's government and his right leaning position he is safe to do so. At least for now, he is immune to holding congress hearing for a scandal I suppose.
And not to mention that Grok is literally trained over X/Twitter, and keep in mind Bluesky is federated and strangely, no one seems to be scraping it over ActivityPub. I believe Thread is also built on the same foundation but it's sure that Meta made good measures for antiscraping, I expected as a data oriented company.
Alas, keep in mind SpaceX merged with xAI and nonetheless don't forget their data side
All these come together with orbital data centers…