Sure, you could write your book. But who will read it? It’s got to have the philosophy, the big ideas that are touched upon without going too deep. You don’t want to alienate readers by writing over their heads.
Now if you want a movie deal for this populist philosophical masterpiece, go SciFi. People have been paying Orson Scott Card for years just to mess up trying to make a movie out of his stuff.
On second thought, it’d sell more if it was Fantasy. Preferably Medieval Fantasy, with swords and magic everyone gets.
If you really want it to sell, though? Make it YA. YA Fantasy? They will snort it off the page. People stand in line for teen-friendly make-believe.
The only way you could top a good YA Fantasy is by… well, not writing a book. Movies, Youtube ads, iPhone games! That’s where the real money is. Because who reads anymore?