I somewhat doubt this is the way to look at it. Dogs took between 11,000 and 40,000 years to domesticate. That all started with dogs using up more of a carcass than humans would after a hunt and the humans just didn't care. Eventually, humans found that dogs can and would do more.

If my read is right it, any species could be tamed as long as they're evolutionarily ready to. Not all members of that species may be ready to either, as the writing points out a wolf did attempt to grab a baby gelada, was drove out, and was not allowed to return. Interestingly, they did not apply this logic broadly.