You are welcome to your opinion about whether your chicks were packed properly or not: but you are complaining about chicks that were packed the same way that usually DOES have them arrive alive, all over the USA, for decades.
Packing a certain number of chicks in the box is a reliable way to...
If you order a book, and the seller packs it properly and sends it through the Post Office, do you blame the seller when the Post Office loses the package, or drops it in a puddle and it gets sopping wet and ruins the book? Most people would blame the Post Office in that case. The Post Office...
The obvious way around it: only sell locally.
The hatchery could limit what months they sell chicks, or only ship to certain states in certain months. This would not completely avoid the problem, but could help. But the customers in other states might be just as upset if they can't order (and...
I think the chick-shipping methods were mostly developed before heat packs became available. When they work well, there is no reason to change.
Hatcheries that ship very small orders (under about 15) usually do mention heat packs in their packing information.
And yes, there is a chance of...
Most hatcheries do NOT include heat packs. They try to pack the right number of chicks in the box, so their own body heat keeps them warm. That is a big reason for the 15-chick minimums and 25-chick minimums. Some decades ago, it was common for hatcheries to only ship in multiples of 25 (so...