Maybe late to the game (no pun! :)) but ok.
I must say that my last console was a PS3, then I played on steam 2 or 3 times a year, now I was lend a PS4 by a friend cause I wanted to try some exclusivity but is it normal to install 20-30GB even when you own physical game ?
It was already a thing annoying back in the day on PS3 for some game (GTA 5 being the worst as far as remember) but here, it is getting ridiculous and seems to be default behavior for most games.
On PC, which is mostly dematerialized, why not, at least, you can use your computer in during the time but I don’t expect that from a console.
Good news: steamlink can stream your pc games to your tv and you can play with a ds4 or xbox controller. It’s the more environmentally friendly way anyway and it works well.
I don’t mind downloading stuff (ie from steam) on PC as this device is multitasking but for a gaming console aka “appliance”, I expect a plug n play approach. and when i speak about streaming, I mean, plug n play, no downloading time and minimized loading (between 5 to 10sec max).