As it happens, I posted a comment that tries to explain some of this a few months ago: https://news.ycombinator.com/item?id=6188987.
Would you constitute software development for the adult industry as one of those? I'm a freelance software developer.. Most of my clients are in the adult realm. I build sites for them, and software they buy from me. I'd love to use Stripe for processing their invoices (currently use PayPal) but that worries me that I'm gonna get canned because I wrote a CMS that is used on a porn site.
It'd be good to hear more specifically what's not allowed.