It's much more akin to convergent evolution than any "natural state" of markets. People design comparable instruments to solve comparable problems. It does not

It's much more akin to convergent evolution than any "natural state" of markets. People design comparable instruments to solve comparable problems. It does not mean there is no design. Just like dolphins and sharks having evolved fins separately does not mean that there is a "natural law of fins", it means fins are pretty good at solving the problem they solve.