This also explains why Jake Paul always wanted to fight UFC fighters that are already retired or those who are not getting enough money when they fight, he offered them some huge cash and they took the bait because they haven't got enough money when they were in the UFC. that's a big opportunity for him and now we already know one of the reasons why they fight him despite them being one of the legends in the UFC.
On the other hand, boxing gives them most of their rights and they really wanted to switch professions because after all is their body and they are the one who needs to fully earn from it, not just some individual who owns the company like the UFC.
It feels bad seeing legends getting mauled by younger fighters that they should've beaten during their primes. And it's the same when stars from other sports like the UFC cross over just to get exploited and destroyed for money. I cannot blame them though especially if the amounts offered are life-changing to them. They would rather take a punch from Jake Paul and get shamed for millions.
Imagine Jon Jones' rematch with Cormier with a PPV buys of 800k. His guaranteed purse of $500k ballooned to around $2m. But that PPV buys figure in boxing at that same time would've guaranteed an easy minimum of $20m payouts for all the fighters in the event. It's funny when some people tried to defend UFC contracts and purse sharing, especially its stars.