What about households with both parents working to pay the bills? How can they home-school?
A typical job is only 8 hours a day.
One could work nights, and the other work days.
Cut back on some other things.
One could work part time, and maybe even share schooling with another family in the same boat, so you would only have to school both families kids for half the time while the other family schools the kids the other half of the time.
But yes, there will be some that are barely making it as it is, so yes their children will not be as educated as others.
But we already have that situation, as anyone with more money and time can provide their children with a better education than others.
So the fact that some will not be better educated is just a fact of life.
Plus the fact that some parents were never educated well enough to teach children.
But even without a formal education, a child can learn a trade from their parents.
There are lots of jobs that do not require a higher education.