First, I'd like to say that I find the language of "blatantly wrong" hyperbolic and not especially helpful to the spirit of community discussion.
It's not that I don't understand operating expenses. The original question was could one find a property that would shoulder 50% operating expenses AND pay a 100% financed mortgage? My answer was - not in CT. Could one find one that would produce enough that would pay for its own expenses IF one paid cash. Well, of course.
Take this hypothetic example based, in part, on actual figures. My 3 family brings-in 3k/month, or 36k/yr. 50% of 36k=18k/yr.
My taxes are 4k, my insurance is just over 1k. That's 5k/yr, taxes and insurance. Snow and lawn average 1k as well. 6k total.
Let's imagine 4 disasterous years in a row - with an eviction every single year at 5K and one major mechanical failure. This, on top of the 6k off the top for taxes, ins/lawn, etc.. We will simply state these as minus 11k listed every single year.
YR 1: -11k,new roof (-12k - just did one) -11k+-12K =-23k. -23K+18k=-5k
Yr 2. -11k + (2 of 3)failed boilers (4k each =8k). (-11k +-8k=-19k)
-19K+18K=-1k
Yr 3: -11k+ 3rd boiler fails (-4K). -15K+18K=+3k
Yr 4: -11k + 3 failed water heaters (3X600=-1800). -12,800+18K+=+5200
My four year total of -5k, -1k, +3k, +5200 = +2200. And this was with an eviction every single year and with a new roof, all 3 new boilers, and all 3 new water heaters. I have never had four years in a row in which a major mechanical system went every single year. And an eviction every year - that's a 33% eviction rate for this little 3 family every year. Even so, I come in under 50%. I didn't do the math, but I'm guessing even in these disasterous years its closer to 30-40%.
I'm sure you'll tell me I have smaller repairs I'm not calculating, as well as water/sewer, etc. And for this example you are right. But I think you'll also agree, with most major mechanical systems repaired, years 5,6,7 are looking very bright.
In reality, most all of my tenants are long-term, professionals. I had one near eviction with 3k lost rent, yet few turn-over costs in 7yrs. Repaints 2x at 1k. In these years I have replaced two water heaters ($1000 total, installed), no boilers and no roof. They are in excellent areas. Short of a meteor striking the earth, I'm imagining this predicted expense rate will drop even further.