So we should lift other zoning restrictions as well.

Allow people to start businesses in these buildings.

It's one thing to prevent boiling horses into glue next to a preschool, but it's entirely another thing to specify that a building cannot contain a barber shop because it's zoned for residential.

We have too much zoning in our country. Too many rules to allow the market to simply solve problems. Oh this neighborhood does't have a doctor's office? Sounds like a great place for a doctor to set up shop, assuming they're allowed.