>>17973409
Bison weren't domesticated for two main reasons.
1. There were so many of them there was no need to.
2. Compared to the Cow and it's wild ancestor Aurochs, Bison milk production doesn't even compare.

The Amerindians were fully capable of doing domestication. They *invented* corn, which has always been a "Genetically Modified Organism" by the way.
Pic related is literally the greatest feat of engineering in human history.