I mean, Asia already shows this to be the case, the My Hero Academia fanbase alone shows you can easily do that.

With the western ones, no because they have a death grip around their IP, did we forget a few years ago when Disney tried to get a higher percentage of Spider man films and Sony told them to fuck off and threatened to pull him out of MCU? That death grip on IP means they are also trapped with the writers that ruined them so there's no real saving them.

Best off making new superheroes and just waiting for the companies that hold the IPs to fail.