Good questions. Are they going to lose business because of lower throughput?

Ultimately the nature of codifying altruism in the law is that someone must sacrifice for someone else; the sacrificer and as well as the recipient of the sacrifice are subject to an Overton window.

I think people feel differently about Uber's situation because unlike a grocery cashier who must spend extra time assisting a slower customer, an Uber driver isn't getting paid in the meantime.