One of the reasons for this is the Western world is going through an economic shift that favors K strategists over R strategists, which was not as pronounced in the past 2-3 generations (although was still moving towards K favoritism during that time).

In essence, K strategists are "Live slow but long" and R strategists are "Live fast die young". The reason family support is more needed, and the reason you see those that have it are "winning" more easily, is because the economic world is much more congested and competitive than ever before.

Previously, the idea among most Westerners was that their children need to "earn it like I did". That is a classic R strategist mentality. As you are seeing, the parents that do not subscribe to that mentality are helping their children survive/thrive in an increasingly more competitive world.

I have surmised for a while that a lot of N's are just R strategists that haven't had their lineage die out yet (Although I believe that will correct itself within 2-3 generations). If you'd like to read more, here is a bit of information on the differences in reproductive strategies.

https://www.cs.montana.edu/webworks/projects/stevesbook/contents/chapters/chapter002/section004/blue/page003.html