Yes, but both Chelsea and Man City have been propelled from average club to mega club status by their owners deep pockets. They haven't had to rely on fans footing the bill.
This is going to change with Chelsea, I'd put money on it. Their new owners are in it for profit, they're not going to bankroll them like Abromovic.
I really do think, in today's climate, with Americans buying up interest in football, that imagining clubs are going to ignore a potential source of revenue they could squeeze dry is very optimistic.