More data moves in your average playstation system update than that. Steam probably transmits more in a morning than that

There are far more Google Chrome users than probably PlayStation & Steam users combined.

Also, someone installing Steam is going to expect large downloads, hell, the platform tells you the size as you're about to start the download.

I don't think anyone expects a browser to suddenly download 4GB, let alone behind their backs!

Have you ever watched a 2 hour lecture on Youtube? Next time check the memory consumption of the open tab.

A 720x400 two-soundtrack rip of first season of 'On becoming god in central Florida' is only 5.5G. That's 10 episodes. Now what you were saying about 2-hour lectures?

Valve published some numbers of this.

11.42 petabytes per hour, and roughly 190,000 GB per minute and 100 exabytes delivered in 2025.