The important thing is: Picasso knew what to study. Over time art had established a canon of things which helped people to get better at classical arts. Only after he studied that canon in depth and for a long time he could then break into new territories and start breaking rules intentionally to develop his own style/school.
Our craft is very bad at providing such a canon. It is even anti-intellectual in parts ("what do you mean you cannot be a master after x weeks? You are a gatekeeper! you suck").
That and we are still not sure what is important and what isn't (i.e. what should be part of the canon). Our medium of study changes all the time. Arts medium of study is reality and reality, for all our advances, doesn't really change.
If you look in the link there are six games listed. One is Star Citizen, two are (afair) by Amazon game studios, so that would leave three other games. No idea if these are just the show cases or all of them.
So, not the greatest uptake, but Amazon was always willing to give things time to mature. We'll see if they can take market share of UE4/Unity.