Interesting point about grassroots vs top down. I think that definitely plays into the equation. Another big part of it is that developers seem to a unique class of workers that don’t seem learn much from those who preceded them. We love to reinvent things, in part due to the snowflake effect & NIH syndrome. The other reason I think the wheel keeps being reinvented in tech is due to the developer workforce essentially doubling every 5 years... also, the sad reality that ageism coupled with very few long term viable career tracks available for software writers pushes a lot of experience and wisdom out of the industry.