Marvel kinda, sorta, addressed that once in one of the Squadron Supreme limited series.
The heroes decided that with their superior technology they could actually fix things: they could use a telepathic conditioning machine to make villains and criminals stop committing crimes; they could just whup on the world and make it end war; they could confiscate all weapons and end general violence; they could put anyone dying into suspended animation until cures could be found (because they couldn't actually create a panacea drug to cure everything); and so on.
Naturally, people hated it.
Including some heroes, who split off and joined the few remaining villains in hiding to stop it.
Leading to a grand battle where, IIRC, a mind-converted-then-freed female villain in love with a hero fighting with the villains killed a hero during the battle in cold blood (as in, the hero was helpless rather than with just a really powerful attack), and the whole battle stopped while everyone angsted over the moral implications of imposing utopia on the world, ultimately deciding to just go back to the status quo ante of heroes fighting villains, locking them up, the villains escaping, and the cycle repeating, while ordinary people starved, fought, died, and committed crimes.
In others words - the writers couldn't handle it, anymore than they could handle Spider-Man killing someone accidentally and retconned the limited series into an alternate universe.
There are of course multiple other factors, not the least being the Comics Code Authority until the publishers gave up on it, where sex and murder were generally forbidden, and, perhaps more importantly, trademark, which requires characters and names to be used regularly or be lost. Having your comic treated like an issue of Playboy and losing rights to a main character because he got offed really works against having a villain read and learn from the Evil Overlord List.
Yes, this is a major suspension of disbelief element in comics. Compared to some others, it really isn't the worse, especially the rehashing of story lines with minor tweaks over and over and over and over again.
I expect that is why many people give up on comics - they realize this has all happened before and they will be paying for it again and just move on.
Consequently, I expect that is also why non-mainstream comics have surged so much - they are better at killing off heroes and villains and just moving along with the story, accepting a series will end after 50-100 issues, and that they can keep their trademarks and copyrights with sufficient trade paperback collections and re-releases.