It's not whether there are people who are willing to pay, but whether there are enough such people so that mandating this would not lead to substantially less n

It's not whether there are people who are willing to pay, but whether there are enough such people so that mandating this would not lead to substantially less number of services provided by companies such that society collectively will be worse off. I.e. a regulation like this proposal will raise the cost of business which ultimately consumers have to bear, and the question is how much cost it will increase overall and if the consequence of that increase is actually acceptable for the society. I don't know anybody knows the answer for sure - it's possible the cost increase is marginal and can be easily absorbed, but maybe not.