One of the biggest changes since then is that there are companies that a different scale of revenue per employee ( https://www.wolframalpha.com/input?i=%28google%2C+meta%29+re... ) and pay accordingly.
While there's nothing wrong with those companies paying such, it drastically changes the incentives for the regular employee. Going to work in Big Tech can be like winning the lottery (in the dot com boom, I had about 6 million on paper... that I didn't sell before the crash).
That there is drastically different industries with correspondingly different levels of compensation has incentivized the person who can change jobs to move from a $60k job to a $120k job to a $250k job to do so.
In the 90s I was making $50k/year ($50k '95 -> $109k '26 https://www.bls.gov/data/inflation_calculator.htm ).
The companies where people used to work a decade or two or three are still there and in many cases, largely unchanged.