In almost all countries you can buy citizenship if you're rich. You don't even need to know the language. Immigration and all these gimmicks are for peasants only.
This isn't about simply "buying citizenship".
It's about literally bouncing people who are already citizens out (for the duration of the pandemic).
> Otherwise what's the reason for a rich one to invest into country at all?
These new visa holders just make it a little bit harder for citizens and residents to enter the country, that's all. Over 200,000 people have gone through MIQ during the pandemic --- that's a lot for a population of 5M. People who wanted to come back since the start of the pandemic have been able to come back.
I don't think you can buy citizenship in most Central/Western European countries. You may be able to buy residence status but not citizenship.
I’ve checked 2 (UK and Switzerland) and both offer some form of Investor visa, so it’s really no different to the New Zealand situation (other than general restrictions on entering the country).