When was the last time you used an application from a gallery, archive, museum or library? How many people use
https://apps.apple.com/us/app/wikipedia/id324715238 instead of visiting wikipedia.org? I'm not naming names but this came up a number of times at meetings I was involved with in the GLAM community where people mentioned having spent considerable amounts of money on apps, even winning design awards or getting featured in the Apple AppStore, and then seeing that their daily active users never came within 4 orders of magnitude of their web traffic.
What they generally had in common is that they're content-heavy (i.e. solidly in what the web was designed for), might not require authentication, and most importantly aren't something most of the users wanted to use all of the time. If you are trying to get the hours for a tourist destination or even a restaurant, look at public information, etc. the time needed to login to the app store, authenticate to approve the purchase, wait for a large file to download, open the app and complete any mandatory enrollment, wait for it to retrieve content, etc. was often orders of magnitude slower than using the website. Restaurants and bars are a great example of this: if it's your hangout and they have something like integrated ordering, maybe a trivia night or something like that, the app can be useful. For most people, however, a webpage with the contact info and a menu with Apple/Google/Stripe buttons to pay is going to be better than an app they use a couple of times a year.
The other key thing to understand is that this is a question of priorities and budgets. It wasn't that there is no possibility of doing anything useful for these organizations in a mobile app but rather than the cost wasn't worthwhile for the incremental benefit to the users, especially when you considered the opportunity cost of not spending that much money on something else, especially since most of the cool things you could do in an app could also be done on the web with very similar quality but with the difference that you only had to build one version rather than 2+ and the web version required much less ongoing maintenance.