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DPoS actually scales to world reserve currency better than any other consensus mechanism. The first transition for DPoS voting would be people like exchange owners and businesses that utilize the platform would run as delegates to make sure the network they depend on is secure. From there, the actors would just keep scaling larger until you had every nation state as a delegate. Some people would think this sounds like a bad thing, but unless every nation was colluding with each other, it would get rid of fractional reserve banking at the very least, which is the real root of all problems.
Cause what could go wrong with nations and/or corporations being in controll of the network
I'd like to see consensus being reached like it is in most "fast confirmation" implementations right now (i.e. a set of accounts votes and everyone else accepts that) but I'd like the validating parties to be chosen in some way that doesn't require people having to or even being able to interfere. Pretty much what VNL claims to be doing just maybe backed by a proper whitepaper and not by one of the most shady projects out there right now.