"90% of its workforce rotated out and replaced with younger, more capable, less jaded workers"
As an older and LR'd person, who indeed was very fortunate to have been around a quarter-century ago at Cisco; I do not doubt that younger people are more capable. But I do believe they are understandably actually more jaded.
My (almost 60 year old) generation, and our parents' generation; have essentially drank too long and too much from the USA money well. My folks have been retired for over two decades, their company had an awesome pension and retirement plan. Plus they have been drawing Social Security for also almost two decades. They are awash in cash, real-estate and investment income.
I likewise was around for the early payout days of Cisco and gladly took the LR years ago. Because of investing, real-estate income, and good planning; I still work, but just a piddly little job for spending money. The early days of Cisco, old (pre-RSU "real" stock options, cheap mortgages, cheap new home construction availability, and "easy" money in the stock market (funded by low interest rates); all enabled an early mid-50s retirement for me.
Fortunate.
I am also fortunate to now work with folks in their 20s and 30s; away from corporate USA. If I were that age now, I would steer clear of sacrificing your life to giving 100% effort for a company. There is no loyalty, and no big reward for great performance anymore. Moreover, why would anyone want to pay a half-million dollars for a home now; that same home being under $200,000 a quarter century ago?
Everything too expensive, and the backstop of a job that will allow those wanting to start a family, and live in a realistic home; well that assurance is just not there anymore.
I do not know what the answer is, just glad I am not a younger worker in today's world of pursuing higher paying reliable corporate jobs.