For example, consider wealthy foreign investors who invest in US real-estate using EB-5 visas.

You should be able to avoid many mistakes typical 20-something newbies make in their rush to get wealthy in 3 years.3) Do investment with timelines. 

Generational wealth is made from appreciation and equity, rental income is insurance against downturns in the market. 

I forgot to add that I did a background check on the seller and he looks like a very wealthy property developer who owns a lot of large buildings

But I know a lot a lot of wealthy people.

I watched the one with Gwyneth Paltrow and it made me sick watching her trying to grasp the fact she couldn't buy avocados or whatever it was she wanted and she just simply gave up while giggling.Other than the mentally ill, and the disabled and the percentage of people who are lazy and would rather live in poverty than work (think about the likelihood of this), there are probably other factors involved that have zero to do with someone's ability to manage money.In fact, it's far more likely that someone living on next to nothing is much better at managing their limited resources than any wealthy person. 

There is NO WAY someone as apparently wealthy, smart and likeable as the OP would not have known he was moving into an ashtray with walls,  pre-primed and painted.With all your paid for property, millions and swag, why are you living in squall I wonder? 

The tenants moving in are wealthy and have expensive taste.

Don't buy in a very rough area, but don't buy in an uber wealthy area either.  

The party students (as I’m told by several who have lived here for several years and are in the know) and those with wealthy parents flock to the apartments offering all the upscale amenities.