For whatever talk people might have of DSP's impending financial doom, its still relevant that he's never sold his life story to anyone just yet.
Even if he actually ever reached rock bottom, it is still possible Warner Bros or some other company might reach out to him and offer a significant amount of money in exchange for the rights to his life story.
Lets face facts, the DSP cinematic universe is far more interesting than any other property that has presently been monetized, and the DSP universe has always been far more interesting and diverse than practically any other property movie studios have currently attempted to monetize.