1. Palantir - big database crunching and querying for some Of the worst parts of govt; NSA being the biggest offender. 2. Facebook - collects (and is sadly just given) massive amounts of consumer data for selling ads. 3. Paypal - a 'great equalizer' in payments as long as they decide your account is legit. If you get caught in their 'bad' filter, you loose access to your funds, which migjt take down your entire business. At least Musk is trying to better humanity.
If, as a libertarian, he wanted govt out of the common mans lives, then why invest and build tools/platforms that take away people's freedom to transact and live lives of true freedom?
He's done the opposite in my mind. Nothing he has built, in my mind, betters himanity like Musk has.