Amnesty International report that things are fairly bad in the UAE for foreign workers.

https://www.amnesty.org/en/location/middle-east-and-north-af...

When people have no hope of not making it as a permanent resident or citizen, their incentives to perform well are not as high. Also immigration is a global market, you compete with other countries that might offer better conditions so you lose on the best workforce.

We do. Swiss naturalization is famously difficult.

But EU citizens can basically live forever in CH even though technically they don’t have permanent residency.