They are the only team that does that and it is wrong because it hijacks the sponsor of the tournament. When you are getting interviewed by a tournament you don't put a picture behind you with your sponsors. You are a guest, you don't bring a billboard with your sponsors
youtube.com/watch?v=S2F8DtHyb3A youtube.com/watch?v=bBuVSaKZ1xU (This guys main sponsor is Nike)
Meanwhile, Astralis put their own with their sponsors when being interviewed by the tournament prnt.sc/smcbet
On lan tournaments you constantly film them with their sponsors on their shirts and merch this is how they compensate and no several other teams did it like fnatic and mouz who even had their sponsors in their team name while their games were being played.
Of course, shirts and merch is something else. My point is the sponsor wall that Astralis player has behind them.
Check the video clip that i sent to understand my point. I am not talking about what they wear but the huge sponsor wall they put behind them, if you have watched sport you know that you dont do that.
it's the idea of winning a monetary prize to gain some sort of compensation for the time spent watching demos, practicing for specific plays to counter specific opponent teams, and so on, that gives them the incitement of participating.
it's a great gesture and initiative to host a charity tournament, but it probably just won't feel the same for these teams.