I don’t really buy this argument. Another thing one sees is companies deciding that a certain level of ‘unregretted attrition’ is good and then effecting policies that end up raising attrition in general and of course it disproportionately rises for the more productive marketable employees. So maybe those companies don’t realise what they’re doing or they don’t know who is important to keep or they think the attrition is worth it. I don’t think one can merely consider it unavoidable when companies actively increase it.