End of the day it comes down to incentives and barriers. Offering training to outsiders to increase the supply of people is great, but not easy. Most don’t complete online courses, expensive traditional training and education is expensive, complex and hard to navigate.

Educating in-house is costly and inefficient end of the day too.

Leaving it all to some of the big tech probably not the most risk free option either.

That’s why the trend of income sharing schools exists I think they make sense - low risk, low barriers and high incentive.