Hotels in general do check IDs of people when they check in.
Most rooms within a given hotel just aren't that different. (ADDED: And to the degree that a room of a given size with a King bed might have a better view/light than another room, large hotels basically make it about the luck of the draw.) The main price discrimination is based on date. Businesses will eat the $400+/night rooms in SF when there's a big event at the Moscone. (Though there are also room blocks and negotiated rates.) Individual tourists will, in many cases, just go a different week and/or scour the listings for an AirBnB that's hopefully a bargain and not a too good to be true.
Airlines have a lot of levers related to status and price-sensitivity for products (seats) that don't have markedly different costs to deliver. Airlines could presumably offer business class seating, even internationally, for much less of a markup than they do. But the average family going to see grandma probably isn't willing to pay even a 30% markup much less a 2x one. So you do different classes and even levels of service within classes.
Most rooms within a given hotel just aren't that different. (ADDED: And to the degree that a room of a given size with a King bed might have a better view/light than another room, large hotels basically make it about the luck of the draw.) The main price discrimination is based on date. Businesses will eat the $400+/night rooms in SF when there's a big event at the Moscone. (Though there are also room blocks and negotiated rates.) Individual tourists will, in many cases, just go a different week and/or scour the listings for an AirBnB that's hopefully a bargain and not a too good to be true.
Airlines have a lot of levers related to status and price-sensitivity for products (seats) that don't have markedly different costs to deliver. Airlines could presumably offer business class seating, even internationally, for much less of a markup than they do. But the average family going to see grandma probably isn't willing to pay even a 30% markup much less a 2x one. So you do different classes and even levels of service within classes.