If you dont have money for a downpayment  now sure how your going to wholesale  .. wholesale takes a pretty decent budget to get going and sustain  I know it sounds easy but its by far the hardest thing you can do in real estate and 90% chance your will blow what funds you have for this. 

A spend rate of 200 - 250k is a very sustainable SWR on 10 M. 

Is this sustainable? 

If it's an income property, then it'd need to meet a self-sustainability test, which you can just look up on Google. 

Is it sustainable?

I also try to factor in the sustainability of the value of the property and it’s rents should the overall market values of the area drop.

And the state of those fundamentals in 2021 is ultimately far healthier, and that health far more likely to be sustainable over the longer-term, than the out-of-whack fundamentals from a generation ago.https://finance.yahoo.com/news...

If it isn't sustainable as a rental then I would sell it and move into a house hack.

But fundamentally I don't understand the strategy from a sustainability view.

I see it as a reason to help by investing in trade schools and providing a sustainable pricing environment.