Yes, I think the pendulum has swung again. There was a period in the nineties when many restaurants, including the Pizza Hut chain around the NYC metro area, installed those fresh tea brewers. But about 4 years ago, the concentrate makers began another marketing push, and places that brewed their own tea went back to a "no-work" method. I first noticed this at a Pizza Hut in New Jersey. I asked the waiter if they still had brewed their own iced tea. He flat out told me they were using a concentrate and, in his exact words, "It really isn’t very good". Store location witheld to protect the innocent.
So now at restaurants, you have to ask a complicated question such as "Do you FRESHLY brew your iced tea from tea leaves? I even saw a small Lipton device on ebay that uses two liter bags of concentrate. And take a look at this page on Unilever’s foodservice website:
Read the description carefully. It is a contradiction of terms.