Why do people say turn key cashflow is so hard to find?

[Bowen Douglas]

I'm from Canada where it is genuinely impossible to find turnkey cashflow but after a quick search i can find dozens of properties in the US that net 500-700 a month even with a 7.5% interest rate and after all expenses. But i keep seeing people complaining on forums saying it's impossible to find cashflow in the US.. Is it due to them looking in the wrong markets? Here is an example of a property the would cashflow easily i just found.

https://www.zillow.com/homedetails/1516-C-Ave-NE-A-&-B-C...

$225,000 fully renovated duplex with the rents combined at $2250 in a relatively nice city with relatively low vacancy rates..