As mentioned, the regulations are the biggest problem. Rather than scheming, just make secure webapps from a new country. Having thought it through a bit, I'm pretty confident micro nation building is easier than taking on banking regulations.
If you want to do something like this in a non US/European country a micro nation unfortunately is not the solution. I believe a large country like China, Russia or Brazil who isn't too worried about the OECD sanctioning them are the only options.
I worked on a payment startup in Panama for a couple of years and know people who have attempted the same in various other offshore jurisdictions. The problem with financial innovation in these places is that you their own regulators are really scared of international sanctions.
Unfortunately in the end I think the best thing to do is to innovate from a grassroots level in the US or Europe. I would never have said so 10 years ago. But the OECD have been very effective in their campaign to scare previously innovative regimes.
