All excellent points. I had a long talk with one of the Pho Saigon people, and I'd like to add another: cost per seat. Evidently the rent on that location is very high, and the capacity for seats is pretty small. So you either have to sell a LOT of 9 dollar bowls of soup (Pho Saigon) or charge a LOT for one plate (Sakura / Rustic River). Either way it's a very dicey game. The Pho manager I was talking to made the point "I have seats for 40 and parking for 300".
Demo the building, and build one with twice as many seats and half the parking.
I was gong to comment on the same points. A LOT of these places are rentals and the upkeep is on the landlord. Rent is high and the landlord is cheap.
Thai Inter suffered through the heating / cooling problems that ran Three Brothers Pizza out of business.
But terrible management, inconsistent quality of food are killers as well as the atmosphere.
Also consider location, location, location. County has jammed a large portion of the population of the county on the eastern side, below RT 245.
Café De Artiste did as well as it did because it was simply that good. Good to the point people would go out of their way.
Plus there is knowing who your customers are and what it is they want.
Again, using CDA as an example, the atmosphere in the restaurant, the service and food were to address what a small segment of the population wanted.
But that small segment was willing to spend the money and were loyal customers.
Everything was what you would expect in a classic, "fine dining" setting.