Read this and try to explain to me again how going free to play does not corrupt a game's design :)
Valve, even though their games have lootboxes, they got it [mostly] right by trying their best to make sure there's no "pay to win" (save for accidental cosmetics' bugs, which are half of the time are "pay to lose" and either way are typically fixed promptly) and all game mechanics are equally accessible to everyone from minute zero, with lootboxes being purely cosmetic.