[naniwaduni]

You'd require them to carry liability insurance (this is usually true for meat lawyers as well), which basically punts the problem up to "how good do they have to be to convince an insurer to offer them an appropriate amount of insurance at a price that leaves the service economically viable?"

[kulikalov]

Given orders of magnitude better cost efficiency, they will have plenty of funds to lure in any insurance firm in existence. And then replace insurance firms too.