When I was a child, there were two major brands of chocolate powder that could be mixed with milk to make hot or cold chocolate: Nestle's Quik, and Cadbury Choco.
The latter came with a small chocolate bar in the box, and I perceived it as higher quality. Later, I noticed that you could also get Hershey's chocolate powder, and there were even plastic bags of generic chocolate powder.
Now, while one sees Fry's Cocoa and Carnation Hot Chocolate mix in the stores easily enough, mixes that also make cold chocolate are hard to find. Apparently Nestle Nesquik, as it is now called since 1999, is still available in Canada and the U.S., so I will check more closely the next time I am at the supermarket.
I had thought the other varieties went away, except for Nestle's Quik, because of a patent issue, but since Nestle's Quik came out in 1948, that seems unlikely. (Of course, patents can have a delayed effect if rulings on their validity are overturned, but my searches on the subject have not turned up any mention of such a thing happening.)
Wikipedia shows Cadbury Choco as still being available in Pakistan... but that trademark may be being used for something other than the drink powder.
Has this just gone out of style because people are more health-conscious these days (but since hot chocolate powders are common, why wouldn't people want the flexibility of making it hot or cold)? Or could it even be the packaging - the Tylenol scare comes to mind?
What do others here recollect about cold chocolate drink mixes?