In the long run, yes. But people are often promoted mostly based on short term impacts. Especially visible ones. e.g. nobody got a promotion because the change

In the long run, yes. But people are often promoted mostly based on short term impacts. Especially visible ones. e.g. nobody got a promotion because the change they pushed for 5 years ago prevented an attack today. That's not to say people are just greedy and only chase what gets them a promotion, but replace "promotion" with "received positive feedback".