Your argument is fatally flawed and doesn't address the fact that the UFC makes farm more money than the Paul brothers do.
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No. Your comment is flawed because it assumes we know exactly UFC's expenses and how much money it needs to have on hand vs how much money can be handed to the fighters. It also assumes that if the UFC paid more to the fighters, they would be making as much as the Paul brothers, which isn't true, Maybe the main eventers could make more, but you would still have plenty of other high level fighters on the card that couldn't be paid millions of dollars.
You also ignore the fundamental differences in business models. The UFC puts on stacked cards with multiple title fights, multiple high level fighters, multiple legends. Now, you tell me who fought in the Mayweather card?
Mayweather actually promotes the fights. So, if he paid his opponent 20%, that's similar to the UFC paying the fighters 20% and keeping the rest for himself.
And the last thing is that, while Logan MAY have made more money than any other UFC fighter, except for Conor, i see no evidence that Jake did too. UFC champions making millions of dollars is an actual thing. Rampage used to make 1.5m many years ago. Couture too. Lesnar made at least 5-10million. Cormier makes 1 million. Jon makes a few million.
Yeah, they don't make 300 million like Mayweather, but they also don't have over 20M followers on Instagram and promote their own events.
Do you know how much Mayweather was making before the De La Hoya fight? 1 million, 2 million, 3 million. And there was a time where he was already one of the best in the world, with multiple world titles, and was making around 300k a fight.
Yeah, if you are a huge name you can make a lot of money anywhere. But boxing doesn't pay big bucks to people just because they can box. You have plenty of great boxers who make shit. Oh, and Gervonta David, a pretty popular undefeated world champion made 1 million in a fight not too long ago. So get your facts straight. It's not like every boxing is cracking dozens of millions of dollars a fight. You have an handful who are. And needless to say, boxing is still a much more popular sport than MMA world wide. I still know plenty of people who have no idea what MMA is. Everyone knows boxing.