Yes that is a very valid point and does move into the realms of marketing and psycology. Though there will always be a proportion of customers who that does not work upon, which is why I like ticketing systems, which enables the customer to go do something else and pop back in X minutes, as not all want to spend those ten minutes waiting in a queue when they can pop and do other tasks in that time.

Giving the customer the choice can see a balance of best of both, though smartphones have helped in that respect as they afford the abity to do that whilst being in the queue. But time managagment is an artform unto itself.

I doubt it - the place is already incredibly famous and serves an extremely good product. It makes more sense for them to churn people through as fast as possible during a busy time.

There'd be an economic trade off where the longer the queue the more likely competition can serve customers if products are somewhat fungible.

I’d be very surprised to learn that you have both been there and had the opinion expressed in this comment

I don't wait in lines to spend my money, never, for any product.

If the bagel shop was mine however, I would have no problem making people wait as long as they were willing to tolerate; it's good marketing, and means I wouldn't have to employ as many people.