We don't really get it with the content still being controlled by its original creator / the chain of people the original creator sold the rights to, but to be honest I kind of like the idea of remaking Batman, Superman, Spiderman every few years.
It becomes like Shakespeare or the opera: you don't go to see a new story, you already know it by heart. You go to see the performance and the innovation within the framework. You get to start asking questions like, "Who was the better Spiderman?".
The big danger of becoming Shakespeare or the opera is you run a narrowcasting risk of turning something that 100% of the population was once familiar with into something less than 1% of the population will ever see. Financially that might not be long term sustainable.
Spiderman remakes as the new Hamlet is interesting conceptually as a hard sci fi or alt hist topic. I don't think it would be realistically possible with one showing per year to 0.1% or less of the population dressed in black tie and gown.
A similar yet totally different "innovation within the framework" might be traditional soap opera writing. However that begins to get close to regular TV series. Would it be possible to put on thirty years of daily Spiderman daytime drama?
I don't mean "on the stage" so much as the way Shakespeare -- and other public domain works, like Sherlock Holmes, Frankenstein, or Dracula -- forms the nucleus of new works of art. Every few years a new director or actor will put their spin on Sherlock Holmes -- two movies starring Robert Downey Jr, one staring Ian McKellan, and two on-going TV series. Romeo and Juliet is the basis for like a hundred movies, sometimes with tragic endings and sometimes with happy ones.
Retelling well-known stories with slight variations or twists is something humans have been doing for millennia.
It becomes like Shakespeare or the opera: you don't go to see a new story, you already know it by heart. You go to see the performance and the innovation within the framework. You get to start asking questions like, "Who was the better Spiderman?".