... new policy designed to stop soaring house prices ...

... said the new plan was designed to stop rising house prices and will apply to non-residents.

If someone else is willing to pay more the seller should have the opportunity to sell it to them. These laws privilege the desires of some buyers over both the desires of sellers and non-native buyers.

It looks like ban will apply to non-residents rather than non-native. If you're non resident, why do you want to buy? Rent to check out the city, get residency which you'd need to live in a country anyway, then buy.

I never said that I did.

> If someone else is willing to pay more the seller should have the opportunity to sell it to them. These laws privilege the desires of some buyers over both the desires of sellers and non-native buyers.

And if the areas in question had been rezoned to increase supply instead of reducing demand, that would have privileged the desires of a different group of people.

All laws privilege a certain set of desires over other sets of desires.

Why shouldn't people who live in an area have the right to decide how they want to collectively structure their lives and economics?

Housing is a human right, and lots of US cities have all kinds of regulations around affordable housing. I think we're not far at all from "you do have the right to buy a house at a particular price," we just dress it up in fancier language.