Make time, your 80hr work week can occasionally suffer a reduction of a few hours once a year.

There are real reasons prices are down this much, even with that reduction we are an extremely high priced market with actually relatively cheap rents which makes the calculation tough to justify in certain sections on the city (I’m renting for $2700 on a 2bd 2ba literally overlooking nats park, an equivalent condo would have been 700k and about 5k a month) we have the most remote workers in the entire country, and with the hollowing out of dc crime has definitely returned (we are tracking 1995 murder numbers so far ) so while I’m extremely bullish on d.c. and think it’s incredible deal right now, there are reasons it’s fallen so sharply, so quickly. 

Most commercial owners would prefer to take a temporary reduction than to evict a business and then wait to find another tenant.

Finding a better discount on flooring or fixtures doesn't necessarily mean any reduction in design or quality. 

Plus, I already gave her a rent reduction earlier this year when we took over because she complained that the vacant unit next to hers was listed for rent at a price cheaper per square foot than her unit. 

I just got a property for $40,000 less than asking and got another after someone offered about $30,000 more than asking than slammed them with $25,000 in reductions from the inspection- seller walked right back to me.It's easy to find reasons not to buy and you shouldn't buy if you feel this isn't a good market but MPLS still has some of the lowest vacancies rates in the country. 

Is there any reduction in benefit? 

That $9,400 is mostly tax free from depreciation so that would be like a job making 100k a year if not more.Add in the appreciation and debt reduction that those 20 houses are now going on top of that to have going forward and I don't think this would even be close.i.e. after 10 years, those houses might have gone up from 100k to 125k.

A cash offer is likely to win out against an offer of 5-10% higher (or maybe more) when dealing with REOs and other distressed properties, so factor that into your equation before saying it is an 11% reduction in return.

The first year's cash flow from the property is often referred to as "cash-on-cash" return and you have confused that with ROI.The ROI on a multi-year investment is actually not that simple to calculate, but it would take into account the reduction in your loan balance.BTW, I am not sure from where you got the $2,000 investment figure when your example mentions a $5,000 down payment.