That's a question we've pretty much already seen in 2020 with c0ntact, Envy, Gen.G and Chaos. SHiPZ, EspiranTo, rigoN, Snappi, Spinx, ottoNd, Thomas, Calyx, MICHU, koosta, autimatic, BnTeT, leaf, Xeppaa, vanity, Jonji, MarKE - all of them A-class players capable of doing real damage at the top step of the scene. And as we have seen and will see, life finds a way. Some probably will never make it to tier 1. Some of them will be forced to swap to Valorant. But some still will be able to get tier 1 opportunities, like Xeppaa on Cloud9, BnTeT on EXTREMUM etc. And I'm sure we'll see a large part of the remaining players also picked up somewhere.
Question is what would happen if mouz don't get dexter when karrigan leaves. What are their other options? MSL? He's decent but I have more faith in dexter in terms of developing that team. Or what happens to dexter if he doesn't take the mouz offer? Stuck in AU for the rest of his career? He's 26, and my general rule of thumb is that when a player clocks over to the age of 27, that's when teams stop being interested generally speaking. This could be his only tier 1 opportunity, why shouldn't he take it?