It’s about money. People are okay paying way higher margins for alcoholic drinks. They want you drinking alcohol for profits and the inebriating effect makes you more likely to spend loosely.
You think restaurants take worker’s labor into consideration when making profitability choices? Look what servers are paid, they clearly don’t value their labor.
As an iced tea enjoyer, who has been to almost 40 states that is absolutely untrue. I've never been to any restaurant that serves sweet tea but does not serve unsweetened as well. Some places especially in the north don't consistently have either, but in my experience, if they have one they always have the other
Nope. Plenty of places in the midwest only carry unsweet and "flavored", not regular sweet tea. The flavor is usually extra sweet fruit flavored syrup like raspberry or peach.