I've brought games I've pirated. Underrail, Fallout 3 GOTY, Expeditions Viking, Tangledeep, KSP, to be specific.
Proof I'm not shittin:
And here are the pirated games on a old drive: note dates: I tried to push my underrail pirate saves to my legit copy but no luck.
You know it's a cold day in hell when I'm agreeing with/helping/verifying BTG.
I just used them in lieu of demos, to see if my rig can handle it, if i enjoyed it. In the case of Doom, Age of Decadence, not really. In the case of Expeditions, Underrail? HELL YEA! I haven't even played Expeditions because I know this laptop can't handle it but I will when I upgrade.