Well, I think there are two things mixed up here. Digital nomads do not have a real "base". Meaning they do not live somewhere fixed. They are traveling and work at the same time - almost all the time. And often jobs are smaller gigs from different opportunities. Often digital nomads choose "cheap" countries to travel too, to save money/ limit expenses.
On the other hand, there are remote employees, that often have a fixed base where they live and work. They just do not work in the office.
Surely, there are also hybrid combinations of both.
I for myself, work remote. I worked in many different countries such as US, UK, Germany, Austria, and the Netherlands. So, I do move countries, but not as travel. I also built a life in each of the countries.
Remote jobs are becoming more and more common, but are still the minority of opportunities. My remote gigs happened because I had a non-remote job, but wanted to move. As I provided enough value to the employer, they agreed to let me work remote. It would not have been possible to start remote. (I work for Microsoft, btw). Same holds true for gigs at Google/Amazon and I think for most smaller companies too.