C-suite only get credit for changes, so they are incentivized to make changes at random and hope some of them turn out to look good in hindsight.

As I heard once, in a large company VPs are rated by the number of reorgs they initiated per year. That explained so much insanity I have seen: a project gets moved to different directors, then after 5 reorgs ends up in its original place. Just large company things, VPs have to show "impact" where there is none.