Don’t know why the companies find it more profitable to buy houses people aren’t looking to actually move into, at least at the rent they are willing to accept. If I fully understood why, it might just piss me off more. Like maybe the houses work better as a loan basis than other assets, so even empty and unused they are valuable as some sort of financial trick.

That’s one thing, but housing has been a low-risk investment for a long, long time. If they bought the house OP posted in 2020 and sold it in 2024 they would have almost doubled their money even without renting it out.