That's nothing new, if you pay $1million (or $500k depending on the area of investment) then you can essentially get a green card as it is:
https://en.wikipedia.org/wiki/EB-5_visa
Portugal has a similar system, called "Golden Visas", which is significantly cheaper. Of course, being true to this country, there's already a five year backlog due to bureaucracy and investigations into misappropriations and fraud.