Modern superheroes are taking more money from civilians than their villains ever dreamed of, but it's the same few heroes being replicated more often than the dollar bills they're earning. Every Superman movie since 1980 has been a mistake, there are enough Batmen for a Bat-Basketball team, they rebooted Spider-Man like it was two hours of blue screen of death (which would still have been better than Spider-Man 3), and Iron Man has appeared in more entertainment gossip pieces than the actor who plays him.

Marvel

Not so much method acting as giving the coolest guy the coolest stuff.

The whole point of superheroes is imagining things above and beyond what's possible. (I've already come up with 6 Ways to Build a Better Batman.) "Strong guy hits people" and "rich guy wins over the homeless" are already far too common in the real world, never mind cinema. The industry has gotten so desperate that news of an Ant-Man movie wasn't followed by laughter and the real announcement. Ant-Man's only qualification for superheroing is being invented around the same time as tie-dye clothing and unprotected group sex, and being a worse idea than both. Comics are stuffed with superheroes who would make much better heroes.