This is tangential but relevant - Thailand's current fertility rate has fallen to 1, substantially less than Japan even. And this fertility collapse happened long enough that they've already entered into the population decline phase - with accelerating declines over the past 4 years.

It's still the early stages, but Thailand is going to unavoidably be entering into demographic collapse over the coming decades. So tourism, especially when it results in attracting lawful/educated/etc long-term residents, provides more than however much money people can spend.

Of course Thais themselves just need to start having a lot more babies, but it's not looking like that's going to happen. The whole world is going to look so different in 50 years, even if literally nothing whatsoever changed from a technological POV. Fertility issues are going to radically reshape the entire world and the balance of powers, perspectives, even religions, and much more.