I fully expect that I won't have to upgrade storage for the rest of my life, because, honestly... I don't know where we go past 4K. 8K is just dumb for everyone unless you have a 200 foot screen that you sit 10 feet away from or so. As far as games go, yes, they're approaching 250 GB, but there does come a point where textures, models, and sound will become "good enough". I figure 1 TB games will be pretty much "the end", but then again... the first computer I got was 28 years ago and had a 540 MB hard drive, but in fairness, that seemed small even back then.
I guess some day someone will bitch that their computer only has 6 PB of storage...
I've only recently really started to bring my hardware back home and only have a few TB. I don't mind purchase price for hardware, but it's the power consumption that's an issue. Especially as our electricity has gone up 60% a few months ago, and likely going up again October.
My day job is scooping up film data, and if my last 15 years here has shown me anything were always going to need more disk. Staying at 4k the be lovely.