"Cloud kitchens" produce dishes for delivery services (and in some cases dine-in or food truck) in shared facilities -- independents who rent the space collectively, as well as on-staff chefs. Platform products like Reef vertically integrate "restaurant concept" marketing to consumers and implementation (producing and delivering dishes for your concept).

> California's bill (AB 626) which allows for "microenterprise home kitchen operations" was passed on September 18th, 2018 and went into effect on January 1st, 2019. This is a much more liberal law than CA’s previous home cooking law — it allows residents to market almost any kind of food they cook at home, and at lower setup costs.

"it’s one of several economic casualties caused by the coronavirus."

Better to say that it s a casualty of the lockdown. It was killed by the government, not the virus.