The steady improvement in computer speed and efficiency (unfortunately brought down by bloated software, but in some areas you feel it in absolute terms), storage and memory size, and EV technology. I hope in 2040 there will be cheap powerful e-scooters and e-motorcycles.
I really hope that storage increases faster than our recording tech, to the point that everyone can easily store the sum total of the internet (videos and all) on a single portable drive.
You underestimate the amount of crap (which is mostly porn, whether you like it or not) on the Internet. And resolutions will increase as cameras get better.
But in some metrics, we have already gotten there. You can download the entirety of Wikipedia and it fits in a few gigs. You could download everything (including the 800+ videos which would span multiple weeks long end to end) I made and have it be less than 1TB.