The size increase in hard drives around that time was insane. Compared to the mid-90's which was just a decade ago, hard drives capacities increased around 100 times. On average, drive capacities were doubling every year.
Then things slowed down. In the past 20 years, we've maybe increased the capacities 30-40 times for hard drives.
Flash memory, on the other hand, is a different story. Sometime around 2002-3 or so I paid something like $45 for my first USB flash drive - a whole 128MB of storage. Today I can buy one that's literally 1000 times larger, for around a third of that price. (I still have that drive, and it still works too!)
The only two games I have that I've put more than 1000 hours in are Factorio and Rimworld. I'd highly recommend both.