Most of the actual groundwork has already been laid by passionate, actual engineers.
Today big tech is just a place people go to make money, and they don’t necessarily care about long term vision.
Mostly filled with the most uninspiring, forced-to-do-kumon types who have little “passion” for engineering or computers. Zero imagination and outside the box thinking. Just rote memorization to get in and then getting PIP’d or laid off to go do the same at the other big corps. TC or GTFO types.
Better luck at startups that are the Google’s of yesteryear.