I dont understand where such rumours about Jake and Conor fight appeared.
Probably there's a promoter that thinks this fight is going to create a massive profit.
In this news : https://bleacherreport.com/articles/2923200-jake-paul-conor-mcgregor-50m-fight-offer-being-discussed-with-notorious-team
It was Jake Paul who tries to entice Conor with a big $50 million offer just to fight him, and I'm pretty sure Conor would not say no to that.
For the team of Jake Paul to offer that big, they must have seen a big potential of this fight.
The huge amount of money could provably convince McGregor to accept this fight since imagine whooping $50m for single exhibition fight that would totally great for him whatever the result of their fight also he has a lot of advantage for that knowing that Paul is not so experience fighter more than him. This fight would provably sell to the fans since McGregor still have huge influence and his fans want to see fight again on the ring.
The amount of money he would make is bigger is x2 of the amount of money he made in his last fight in the UFC.
As per report. https://www.sportskeeda.com/mma/news-how-much-conor-mcgregor-make-last-fight-ufc-264
And this fight (boxing) would be easier for him as for sure he won't get injured like what happened to him in his last fight in the UFC.