If everyone would use that bandwidth simultaneously, that can put huge loads on the net.

Imagine you suddenly have 3 kids. You would need to tell your least favorite kid that it needs to play outside because your connection is too slow.

"Back in 2020 I sometimes had to choose between playing video games at 1080p and going to play outside because my parents didn't want to subscribe to the 100 M net connection, you kids today don't know how tough we had it." "Really gramps? I know 1080p looks terrible but how could they threaten you with the outside?" "Well the outdoors was less of a scorched hellscape back then. "

Latency might still be an issue for many