That is sick.
My guess is that the family did not have health insurance. Without health insurance, they didn't have health care. Or at least, didn't have decent healthcare. Also, when state funded services are available, a person has to know about them and know to use them. That is a lot harder than it sounds... almost always, I think.
The very very sad thing is that Wisconsin has (or at least had 3 years ago) state funded ABA, as well as the more usual trio of ST, OT and PT.