This has been the case for most of Gen X's career: there was very little mentoring, very little succession planning and career shaping. Instead Boomers (who came into an economy where these things, along with pensions, etc. still existed) took over early and have stayed in leadership roles longer than previous generations. A look at congress provides a template.
I read a few articles about this yesterday actually. Read them in order, the second is commentary on the first:
https://finance.yahoo.com/economy/articles/pig-python-baby-b...
https://fortune.com/2026/05/31/boomer-reaction-economy-feel-...