Although there is some resurgence in DIY, I think for the most part nowadays people just want things done for them. And they want it now! And they want it cheap!
However, its also my belief, and may seem contrary to my previous statement, that we live in a golden age of DIY. There are more resources than ever before, and more people are into it.
But as massive as the DIY movement is, it's a very small percentage of the population.
The vast majority are as described in my first sentence.
My first major DIY project was a Heathkit solid state version of a Fender Twin Reverb.
I went to their headquarters in Chicago, brought it home and stayed up all night building it. By 7am the next morning I was playing it.
Then I went to sleep......all day
I remember, every magazine that a kid would be interested in always had some kind of "Build your own ______" ads in the back.
Schools were even very supportive of DIY.
Building stuff was pretty mainstream. Now it's niche market.