Political Memes

He could literally call up a couple folks he knows who have absurd, godly super powers to shut all of that down, or pick up the entire chunk of landmass those problems are stuck in and hurl them into the sun.

May as well ask why Mr. Fantastic doesn't cure cancer, or other super geniuses don't ensure no one ever goes hungry again. We both know the answer: Because the comic would end. Thinking about this shit too hard causes it all to fall apart. The ol' Superman was a transitional energy source idea. Beyond that, if we're applying the lens of "Just tax him properly" we can't also apply the lens of "Just call Superman to eye laser the joker dummy." Gotta pick a lane here.

Meanwhile, setting up huge social programs to raise the quality of life for every Gotham resident which would decentivize crime and the wacky crime lords wearing funny outfits and other gimmicks would suddenly find the city less profitable and harder to hire thugs.

Wayne has. Foundations in both parents names. Hires ex-cons on the regular. Wacky super criminals aren't typically interested in profitability, Joker isn't looking to make millions and retire. He's criminally insane.