>>15426112
Unless they radically shit their pants to the point that even shitskins and chinks pull out (which is always a faint possibility for tyrannical corps who think they're too big to fail), many, many years.
Steam is entrenched to the point that many games' only PC availability is through Steam. There are, fortunately, somewhat viable alternatives who might step up to fill the gap in a Steam suicide scenario, but it'd be a long and arduous process to sink it even intentionally.
Gabe will 100% be dead of a heart attack with a smug smile on his fat treacherous face years before Steam starts having a hard time.