You say that, but then there’s the coastal towns in the UK that used to get all their money from tourism, then tourism dried up and now they’re all shitholes because there’s nothing else going on there.

Often times these tourist cities are much richer than the manual labour cities though.

Now if we’re talking about big cities, it’s mixed economies anyway and tourism will be part of it anyway, but it might not dominate.

Sometimes that’s true, but often it is true that there simply would not be an economy otherwise. And instead would be rampant poverty.