Companies have already entered the space. There's FTX Arena and Cryto.com Arena and I'm sure others will buy naming rights/licenses for other arenas and stadiums. Some teams are even allowing fans to purchase some products with bitcoin. Here's one example: https://bitcoinmagazine.com/business/houston-texans-bitwallet-partner-to-accept-bitcoin-payments

I think Bitcoin payments will become common in the industry, more players will chose to take a portion or their entire salary in bitcoin. Youth leagues could fundraise and accept Bitcoin. There's so much to the industry. The possibilities are endless!