Can be, if it seems likely that the ambition would cause them to leave the company, especially if within a year or 2 of hiring. There are a lot of costs to hiri

Can be, if it seems likely that the ambition would cause them to leave the company, especially if within a year or 2 of hiring. There are a lot of costs to hiring someone (both money-wise and in opportunity cost) and if they seem likely to leave in less than 2 years than the company could end up net-negative for hiring them.