Very little changed, which is the difference

Universities/colleges now focus on identity politics and affirmative action/equity and not groundbreaking science and technology. China will take over where we left off.

The whole Start-Up space became way more competitive and professional, so it‘s more difficult for inexperienced people to compete there?

More old people?

The VC bubble (wrt new startups) has burst versus a few years ago, and you now actually need a good business to raise money?

You

Millennials aged out? Millennials grew up with tech at a time when it was so new that they picked it up just by virtue of being either digital natives or young enough to learn fast. Older generations were still adapting. Now, there's no such first mover advantage.

Geography? Perhaps VC broadening into the wider world and out of university cities.

Hi, interesting topic, do you have a data point for this?

The longer you work for someone else, the more you want to work for yourself