When Steam removes a game, it means they no longer sell it, but they don't remove it from your computer nor stop you from downloading it if you already adquired it.
Typically, yes - but they have also removed games from user libraries, preventing them from ever downloading the game again - exactly like Amazon has done in that one instance with an eBook.
My point is - OP said that "once is enough" - well by that metric, I'm asking if they also don't use steam, because Steam has done exactly this at least once in the past.
