Teams like fnatic last year and sentinels this year won events because they put in the work in the offseason where all other teams were either making rosters or trying new players out or taking a break (rightfully so).
If sentinels or fnatic do not come back next year or in champs this year and show good form it will consolidate the narrative of these teams winning just because they put more hard work and they weren't actually the best team in the world.