25% is NOT normal, it's mostly around 10% IF the Org gets something, sometimes they dont get anything at all. Yes, if you are talking about the top 3 most sucessfull teams, the low percentage is alot of Cash, ofc. But we arent talking about NaVi, Vitality, Astralis etc, we are talking about low Tier 1/Tier 2. Let's say they finish decent and get 15k per tournament because of their ok placement (which can be way less) and the org gets 1,5k. Thats not even the flight + hotel (ofc talking about lan tournaments since no org will build up a roster around the online era). Oh and btw:
"Many esports teams make a majority of their revenue, approximately 90%, from sponsorships and advertising. These revenue streams include sponsorships in exchange for advertisement on the player's jerseys, similar to those of traditional sports.".