In the old world of the internet, people didn’t upload much anyway.

Nobody worked from home. Nobody had their phones constantly syncing photos and videos to 1 (or often more) clouds. And even then, the photos and videos that you could take digitally were very low resolution and not very large files. Game consoles weren’t online by default until Xbox Gen 1 (and as an add on for GC and PS2) and PC gamers were a minority (and rarely direct peer-to-peer).

That has changed, and nobody forced ISPs to keep up. In a lot of markets, the Cable ISP is a monopoly and they don’t have to do shit about it.