Declaring that "I won't do business" with a pizza joint if they don't want a human to take my order makes as much (or as little) sense as "I won't do business" with Coca-Cola because they expect me to tell a vending machine that I want a soda. With that kind of attitude, you're going to run out of things to buy in this country.
Another point to consider is from the business owner's point of view. I operate a home
based business and rely upon an automated answering system to take calls of potential
customers and my regular customers while I'm out on service calls. I have found that
customers who use my automated system to either obtain info about my fees and
services or to leave a message about their problem, are generally my best customers
and enjoyable to work with. I'm perfectly comfortable with passing up on customers
who will not talk to my machine. If I had to hire a full time human answering service,
I'd need to raise my rates. I' d rather offer low rates for my good customers than
try to satisfy everyone and have to raise my rates.
In other words, an automated system could posssibly serve to filter out difficult
customers. It all depends upon how selective you want to be for your particular
business. If you make the best pizza on the east coast, I think you can fully
automate your ordering process and the customers will adapt to it, but if you
are just the average pizza shop, I doubt that you could afford to lose any
customers by adopting a fully automated ordering system.