I think there's a simpler explanation: most people don't do work when they go to hotels, they do the work like you are discussing. Doesn't mean they are intentionally being hostile to remote workers.
One thing I've realized about the world is that a lot of people do things just because others are. "Momentum is a bitch." I will bet you very few people are thinking this way, at least very few that make decisions. And the ones that do probably think it is not worth the money. There's a ton of things where markets don't exist simply because the environment doesn't exist, so the people that can make the environment don't because there is no market. It's the whole "build it and they will come" thing. People are very risk adverse. People are hard to move. Would hotels benefit from this? Probably. I mean even not just considering nomads, most people work from their computers[0].
But it very easily could be one of those things where there's push because there's no market and there's no market because there's no push.
[0] The way people have been talking about working at CES has sounded silly. There was a LTT video where they mentioned how WiFi used to be better in some locations so those rooms were more desirable and the hotel's solution was to make it standard for everyone. They seemed to be suggesting that they brought down the quality rather than balanced.