The problem with superhero movies is the lack of absolutely ANY lasting negative consequences.
Die? Come back to life.
Lose your powers? Get way better powers.
Get arrested? Escape.
Lose an arm? Bionic arm.
(Box office bomb? Reboot.)
No wonder there are so many villains. If you lived in a world where there were zero lasting negative consequences to your actions, you’d probably be a villain too.
Audiences are getting sick of it. Maybe that will be a lasting negative consequence they can’t ignore.