Depends if you see getting an owner with 'deep pockets' as the panacea to the perceived problems with the club. Then, there's the issue would such an owner treat the club as his \ her personal play thing like mansour at city never mind would they spend their personal wealth to the level of some fan's expectations.
Of all the clubs that have been sold, only one to my knowledge has been sold for mega money, manchester united. So, I think on the balance of probability any new mega rich person or conglomerate will buy a smaller club and spend money building that up.
Im aware of many mega rich people in the world, same as you. I dont know anyone personally and I dont see any of them rushing to buy football club's right now, you?
But that's not the point. Abramovich bought chelsea for about £80m, shinawatra bought city for about £150m and mansour bought the club off him for around £200m (I think). Im not sure how much the qatarii's bought psg for. How much has moshiri paid for his near 50% stake in the shite?