They aren't selling in urban places.

Spitballing solution: In addition to LVT, rental tax? Nah, that just drives the purchase price to a higher level. Hmm. Also it drives up the cost of the minimal viable business (hence the coffee sheds in parking lots).

Allowing more supply is the only good answer.

We are in commercial zoning oversupply to be honest. New retail units going up all the time under apartments failing to lease because there is only so much retail demand, at least at the prices offered but we know people would rather take a loss from an empty unit they can write off than actually lower rent and underlying asset value they use for collateral for loans.