Maybe it wasn't phrased as intended, but my point is few companies are willing to take someone on just because they haven't done tech X even if they are seasone

Maybe it wasn't phrased as intended, but my point is few companies are willing to take someone on just because they haven't done tech X even if they are seasoned in tech Y which is broadly similar and have all of the communication, team working, leadership, problem solving and domain skills. Because they need to "hit the ground running". The flipside is that of course employees don't hang around along in IT as they need to keep moving to gain the experiences they need to make their CV look reasonable. So I guess it is perpetuated on both sides.