Most people working at companies, especially in leadership positions, are entirely focused on their career. I've seen this multiple times.

At my last company tech leadership was dumb enough to "say the quiet thing" and got in trouble for it: they pushed tech choices that were not in the best interest of the company because they figured it would be good for their own career, and they sold it as "good for your future" to their subordinates.

Some of our devs didn't like that and talked to the owners about it and the CTO got in some hot water. Then those devs got fired by the CTO of course, after being ostracized for 1yr and basically given no work to do. Ridiculous behavior.