Is that so different than in previous generations? Even back in the C64 era most kids just played games from disks they bought.
If you got into computers any time from the mid-90s, you would have been using Windows and that’s it.
Smartphones always came with their predetermined OS without a command line or programming tools on them. (There where apps for that on many systems, but in general, that wasn’t a thing most users used.)
From the 80s on, programming wasn’t required to use a PC and most users never learned it.
In general, people would just use pre-made software, because they use a PC/smartphone as a tool to do what they want to.
It’s kinda like with any other tools. People buy a hammer because they need to get a nail into a wall. Only very few people are interested in a hammer itself and get into the art of making their own tools.