Jessy, I actually read your entire post carefully, and although I have no interest in the adult entertainment industry (don't condemn it, just not my thing), I got a lot out of your (and Warren's) ideas.  "Moat" is an important concept; it's essentially why my wife and I had to abandon an educational app that we had put 2 months of part-time work into -- a big player stepped in easily before I got it off the ground since the barriers to entry were low.  As I'm thinking about future opportunities, this concept of moat needs to be burned into my mind lest I waste another 2 months of work.  Thanks for the reminder.

That said, with new technologies, there's always a chance an upstart will end up winning big, since being first in counts for a lot.  The barriers to becoming an online BTC exchange were relatively low (some would say too low, but not me).  But look at how successful MtGox was prior to the hack, just because they were one of the first ones in.  A savvy businessman could have taken all the cash flowing in and created a rock solid site and then been THE online exchange to beat in the coming years.  I suspect it will be the same for Bitcoins and porn.