Agree with the other person - there's nothing unethical about hiring people in right-to-work laws and systems however you like. employers can fire at any time with no reason, the reverse also has to be true that they can hire at any time with no reason
buyouts are often massive considering the alternative, which is the cost of recruiting and possibly inflated salaries for the people you recruit, which frankly happens often in buyouts anyway
Like the other person, you’re arguing about individual hires, and not considering the implications of whole-company mass poaching.
Sure some buyouts are big. But plenty are small. Most aren’t “massive”. The histogram, I speculate, is probably something like the Zipf distribution: the frequency of buyouts of a given size is probably inversely proportional to the size, to a first approximation. https://en.m.wikipedia.org/wiki/Zipf%27s_law
buyouts are often massive considering the alternative, which is the cost of recruiting and possibly inflated salaries for the people you recruit, which frankly happens often in buyouts anyway