Just an example with one family I know.
three kids 6,8 and 10 with both parents at home working.
they had to buy two separate computers for them and one used the home computer.
Then they had to all use the Internet at once as school took place during the day when both parents had to work. The parents were able to work with their companies, one was allowed to start at 5am and the other at 1 pm so that eased the Internet demand. They both helped the kids when they were available. The littlest one needed More help, so the two older helped him as well.

These extreme measures are not possible for some families. No money. No flexibility. No connectivity to handle the demand. No skills to be able to help them. Life circumstances get in the way of the most well intentioned.