I believe it is just like the sport of Bass Fishing. Back in the 70s, 80s,&90s the Bass pros would have contracts with companies or say a sponsorship where they would be given tackle rods and reels to use and they would give the sponsors they had 10% of there winnings. A bass boat would be given to you for sponsoring but you had to try to sell it before one year or you started to make payments on it. First place was a $25,000 boat . But then the Bass world changed in 2005 and entry fees went from $2000 to $5000 per tournament. But the payouts for first went to$100,000. But the fishermen had new contracts and the way it became was The highest paid pro was being paid by his sponsorship up to $500,000 + not counting on his winnings. The bad thing this did for fishing was it raised the price of tackle rods reels and Boats. A new boat in 1995 was $25,000. & now in 2023 $85,000. That new pool cue you been wanting for $2,000. If pool starts contacting players. That cue will be $6,000 in ten years. Hope not.