Might want to add Blizzard to that list. I used to own a copy of Warcraft 3, but Blizzard revoked all existing copies when they re-released WC3 as "Warcraft III

Might want to add Blizzard to that list. I used to own a copy of Warcraft 3, but Blizzard revoked all existing copies when they re-released WC3 as "Warcraft III: Reforged". I would have to purchase the game a second time to play it again.