Perhaps the math will change if the hardware market stagnates and people are keeping computers and phones for 10 years. Perhaps it will even become a product differentiator again. Perhaps I'm delusional :).
Well, some of the "old school" has left the market of natural causes since the 2000s.
That only leaves the rest of 'em. Wer dey go, and what are your top 3 reasons for how the values of the 2000s era failed to transmit to the next generation of developers?