My general rationale is that if DOA failed because of a single hack, then although its expensive today to run an experiment on a quantum device, it's still wort

My general rationale is that if DOA failed because of a single hack, then although its expensive today to run an experiment on a quantum device, it's still worth the millions that can be harvested. So accessibility is not a barrier. Likewise, if this event were to take place, it would be a winner take all scenario. All hacks will occur overnight in one go, since there is no reason to leave money on the table. So if the potential is there, and the science is there, I feel all blockchain technologies are at risk.