Comment by Spivak
Disagree, the author is using Fuck You as a proxy for customer pain. Fuck You taxi industry works because people hate taxis. Fuck You hotels worked because people hate hotels. Fuck You Google works (in terms of llms) works because Google results became shit.
Identifying industries where people begrudgingly accept the status quo because they need the service but hate everything about how it's provided is your opportunity.
Paul Graham also has a good way to frame this which perhaps I should have touched upon.
"A principle for taking advantage of thresholds has to include a test to ensure the game is worth playing. Here's one that does: if you come across something that's mediocre yet still popular, it could be a good idea to replace it. For example, if a company makes a product that people dislike yet still buy, then presumably they'd buy a better alternative if you made one."