• They do, but it only works as long as you can subsidize the locals with oil wealth to either not work or work in non-productive jobs.

    The native Emirati population in Dubai is only ~300k while the total population of Dubai is ~3,500k. You can sustain that in a single city, but you can’t sustain that throughout an entire region.

    Saudi Arabia has a population of 32M with an immigrant percentage of 42%. To reach Dubai’s ratio, Saudi Arabia would have a population of ~218M. That would be near Brazil or Nigeria. It would also require the country to expand to be able to support an additional 186M.