There's also a strategy of waiting for rent prices to appreciate enough before leasing to corporate clients. You could get 10y $1000/mo from a small time coffee shop, or you can wait 5 years and maybe get Starbucks locked into a 10y, $5000/mo lease after the area grows up a bit.
Similarly, 14th St in DC even just a few years ago was becoming a vibrant, fun spot to shop, drink, and eat in. This was after years of neglect in the area. Over the last year or so though a string of bars and shops have closed and all been replaced with banks. Capital One Cafes, Citi, etc. I have no idea how all these banks are functioning (I thought brick and mortar banks were on their way out?) but it's a damn shame.
The value of the property for loan collateral is based on rental rates and assessors understand vacancies happen. Therefore it makes more sense to have some vacancy to trade up for a higher rental rate.
Given how leveraged commercial real estate companies are it wouldn’t surprise me to learn that they optimize around this rather than true cash flow.
Of course, that's only sane if the cost of leaving it empty is very low. Which is indeed the case.
I lived next to some church property that was similarly blighted: the church paid little or no taxes and wasn't fined for having the property in disrepair. The congregation had all fled to the suburbs. So what was the incentive to put in work finding someone to rehabilitate and then buy or rent the property?
No clue if it is actually financially beneficial for the renter but many believe it's beneficial to keep a store empty to wait around for a big company to want the property rather than committing to a small entity who can't pay big company rates.
Tenants also make the building more difficult to sell, if you are trying to sell.
Another somewhat related problem that I know happens in NYC is a building is owned by a parent who dies and leaves the property into split ownership amongst the children. Then the children cannot agree on a strategy to rent the building. And the fight results in an empty property.
What you gain from leaving the building empty is that you can sell to a big guy who wants the whole space. He won't do that if you give him six out of ten units and say "The other guys move out in five years" especially since the other guys will fleece you on buyout.
A new residential apartment building goes in with 300+ units; leases to 70%, but 2 of 3 shops/restaurants closes/moves to the next high rise at the 1 year mark for lease renewal.