It was easy enough to adapt to video streaming considering that before it, a lot of people were spending $7 or whatever on three day rentals and paying late fees. Netflix/etc have their disadvantages of course, but there are enough advantages that people like it - especially those who were never huge on owning stuff.
I amount of TV shows and movies that I've purchased in iTunes. All of the TV show seasons are shows that I watch over and over throughout the year such as the Office, Parks and Rec, 30 Rock, Cops, 24, X-Files.
My most watched series so far has been the Office. I am close to 20 play counts for each of those episodes. I still pay for Netflix but I haven't watched it in a few months at least because I love my iTunes shows. The only time I watch anything from Comcast is the Bronco games and then I shut it off.
As far as music, I still prefer to own everything. Lately I've been buying just individual songs and haven't bought a complete album in years. Years ago when iTunes use dot have whole artist collections for one price, I bought the Complete Bob Dylan ($199), Complete U2 ($149), Complete Depeche Mode (either $179 or $199, can't remember). I still haven't listened to even a third of those complete collections, just bought them to be artist complete. Back then, I was buying all kinds of music and taking chances on bands that I never heard of but iTunes would recommend.
I started the three month trial for AM last week and even now, if I hear a song I like, I buy it rather then downloading it from AM. When I cancel Apple music, I would lose the AM downloads and this way, I still get to keep my music.