Actually quite a few countries have a high net worth investment citizen track. You promise to loan/invest in the country above a specified amount and you can get a passport.
There is the USA EB-5 for example. Reading up, an investment of only $500,000 and creating 10 jobs can be sufficient.
I've heard here and elsewhere that only USA uniquely tax citizens living abroad. Most other countries don't.
Seems Eritria and Myanmar are the other two countries with that tax regime on expats
[0] https://en.m.wikipedia.org/wiki/Expatriation_tax
There is the USA EB-5 for example. Reading up, an investment of only $500,000 and creating 10 jobs can be sufficient.