That's just not true, and again I'm just gonna put a real example, many teams wanted Keloqz right after he was benched but non of them were willing to pay the ridiculous buy-out he had, and it wasn't until when at the end of the market G2 reportedly lowered the buyout to a tenth of what it was before when Heretics paid it, and even after the lowering it was too much for teams like MRS.
So yes, buyouts are a thing, and yes, G2 makes money out of them