You can do all sorts of things from a platform perspective on top of the correct blockchain to discourage bad actors. The real problem is that the market hasn't chosen the blockchain yet, so we can't really do it effectively. It has to be a commodity ledger where the access isn't subsidized like the attempts so far have been. It isn't really commodified if the issuance is dictated by some central organization (company, foundation, cartel, etc). It'll have to be bitcoin or one of it's forks since the issuance isn't controlled (i.e. miners can come and go).

Would Soros and people like him care? Not as things currently stand, but under the right future conditions they definitely would have to.