Just sell something on top of a blockchain protocol. Think Ripple, but 100% private blockchain. Just don't allow anyone to sell to anyone but you. Suddenly you'

Just sell something on top of a blockchain protocol. Think Ripple, but 100% private blockchain. Just don't allow anyone to sell to anyone but you. Suddenly you've removed the volatility and deflation risk inherent to cryptocurrencies. The bad part is you don't become insanely rich in 24h; but I think that time passed long ago.