Sure, I buy that with enough incentive that change could happen much faster. There isn't any kind of vendor lock-in with restaurants, and I do think that cooking is much more accessible today than it used to be, even though there's probably less effort spent teaching people how to do it.

Another thing to keep in mind here is that it takes time for people to work out specific budget changes as well. Not everyone tracks their finances aggressively, and it's not surprising to me if restaurant prices go up that it would take maybe a year or two for people to start looking at their budgets and thinking, "hey, I could cut a lot here."

A 5X price increase overnight is something that would be impossible for people not to notice, but I suspect anything that's an impulse buy where the price goes up slowly to be somewhat lagging with people's reactions to those prices, and then similarly lagging with them taking the time to implement changes as a result. See also stuff like streaming services, where someone might keep a streaming service after a price increase even though they wouldn't have signed up at that price. Both inertia and just general lack-of-insight into those price increases can slow down consumer reaction.