Why does everyone assume medical students are from rich families?

Medical students who are struggling financially say they are shocked that a $427 million budget investment to pay students during placements will not include medicine.
The Commonwealth Prac Payment, announced just before Tuesday’s federal budget, will pay $320 a week to an anticipated 70,000 domestic students while they complete mandatory, unpaid placements for nursing, teaching or social work degrees.
Abbey Deguara, a fourth-year student at Queensland’s James Cook University (JCU), said it was “disheartening” that medical students were ineligible.
“I don’t really understand,” she told AusDoc.