They already exist. They are called shared kitchen commisaries. Most places that use these are catering companies. The other majority is companies that need a HACCP approved kitchen for meeting safety standard, you'll also find companies that sell pre-made goods like baking cookies in bulk, or places that only make sauces.

Just think of a food truck business minus the food truck / cooking on sight, you deliver to parties and receptions instead with a-la-carte cooking ahead of time