You could move somewhere cheaper, live with a ton of roommates, etc..
Moving requires money. Commuting requires money. And whether you can live with a roommate or several is not up to you, it's up to your landlord, who has a vested interest to make all of you rent a separate apartment.
As many others have said, what "poor" people in the U.S. have is extravagant to much of the rest of the world.
No matter how bad things are, there's always someone else who has it even worse. In all of human history there's been exactly one person who that doesn't apply to, by definition. So it's an idiotic argument.
If they are spending every single cent and have NOTHING to save (no Starbucks, no cable, no expensive cell phone, etc..), then I guess you have a point.
It's not possible to cut of all pleasures from your life and stay even remotely functional. But even if it was, not only would it likely lead to a rebellion (because if you have nothing to lose except your chains, what's stopping you?) but it would also utterly destroy economy by killing demand for pretty much anything.
I personally think it's the parents' responsibility to put their kids through college (bachelor's degree).
Colleges have limited admission, so it isn't possible to push everyone through them. And if you increase the admission to the point where it will, the degree becomes meaningless - it'll be the new high school diploma.
So think again.