I understand that but you still need a one to one mapping between customers and request, even if that request is not ultimately implemented by the person who picked up the phone.
They'll find a price point that matches the demand with their ability to supply. The premium involved in using this service is already substantial, so it's not going to be an everyday thing for everyone.
Every new customer needs a few minutes of one human's time. They can hire as many people as they need as long as customers are willing to pay the cost of that time. As long as the cost of the humans is something some number of customers are willing to pay, everything is great.
This is an ancient business model for customer service, so I guess I'm confused where you're going with this...
So your question is how are they going to scale to meet the demands of the 300 million people in the US?
Isn't that the fundamental question all business must face? When the first McDonald's opens in a town do they worry and say "How on earth will we meet the demand of the WHOLE town?"
