Wouldn't that just lower its property tax, thereby making it more profitable for owners to leave venues unrented (compared to the status quo)?
If the barista must be paid $109k to afford to live there, then let Starbucks jack the price of a plain black coffee to $17 for a small. Fewer people will be willing to pay this, Starbucks will go out of business and virtually nothing will fill its place. Suddenly these multimillion dollar homes will be in barren wastelands and, gee, maybe they won't be worth so much anymore. A softer solution is to pay the low wage workers from the time they leave the front door, if the wages are insufficient to live nearby.
And people should be paid for commuting. Unpaid commutes to work are a huge hidden subsidy for businesses. They use tax funded roads to allow workers to live farther away in cheaper locations and don't have to compensate them for the time needed to get to their jobs.
I think one solution to lower rent is a rule that for every month a rental property is vacant its book value declines by 10 times the rent.