Who wants to raise them? I lived near a buffalo farm. Akin to cattle, if they’re used to human interaction, they’re not all that dangerous most of the time. But, for both cattle and bison, if they’re not used to human interaction, you could be in trouble. Dairy Cows versus range cattle, etc.
It just takes patience and generations of breeding the friendly ones and eating the mean ones. The Russian silver fox experiment took 40 generations of that (well, not eating) to create a domesticated version.
I’m somewhat familiar with true feral deer vs. deer habituated to our local suburban/wilderness interface
Likely a similar situation.
I still don’t approach the deer.
There used to be a Buffalo herd on Fort Riley. Did some training out there and we were in an area where the buffalo decided they did not like our Duece-’nd-Half trucks. One not only bluff charged one but actually rammed it denting a door.