Rather than cracking down, the current direction is legalization. Countries where digital nomads are common know what's happening and they ignore it as it's beneficial to them and are now legalizing to get an even larger slice of the pie (by attracting those who were previously fearful).
Others have mentioned the issue of housing stock, but regular tourists are actually more inefficient in that regards (very seasonal and short stays. Think about how many empty room-days most hotels have).
The country is likely missing out on (pretty substantial) income taxes, so through legalization they are trying to get some of that. I'm sure the countries enjoy the injection of cash into their economy, but they would rather get that from tourists vs. people working, who tend to use more public resources than tourists.
As for public resources, people who commute for work most likely use more than tourists, but digital nomads doing so would be an outlier.
The differentiation between digital nomads (people on a tourist visa/waiver) vs expats is an important one, as expats do get more entitlements to public services due to their legal residence.
But if you piss off the wrong person, you could have a hell of a time (depending on the country, even spending time in jail).
And the US embassy may not be inclined to help depending how blatant you were about it.
Luckily, the more likely jail time is the more likely you can just bribe the right person, but again, you need the locals on your side to tell you who that is.
You're a blackmail target like anybody else doing something baseline illegal.