This stuff goes in cycles, like anything else in Hollywood: remember that after Tim Burton’s over-rated Batman in '89 {was it that long ago?}, there was a whole spate of superhero movies - the Batman sequels, The Shadow, The Phantom, Dick Tracy, Tank Girl, Judge Dredd, The Punisher et al. Diminishing returns ensued, until the genre was pretty much killed off by the last Batman movie - not so much its innate suckiness as its failure to make as much money as anticipated, especially considering the budget.
Then X-Men was an popular and {more importantly} commercial success, on a relatively small budget. With the rights finally sorted out, Spiderman was even bigger, and the floodgates were open - successful sequels to X-Men and Spiderman ensured that the trend continued, but it’s not going to last: studios are going to film every minor comic they can lay their hands on, the talented directors are going to move on, and diminishing returns are going to set in again, until finally someone is going to make a mega-budgeted Superman that’s going to fail spectacularly. The cycle will be over.
PS I’m still waiting for a decent Judge Dredd movie. And would Rogue Trooper be too much to ask for?