If the elite universities are getting this much in funding and have an almost infinite amount of reserves, why don’t they just make the school free to attend? I

If the elite universities are getting this much in funding and have an almost infinite amount of reserves, why don’t they just make the school free to attend? It makes so much sense, creates enormous good will and increases competition thereby getting even better students. They can charge for boarding and food may be and waive the tuition if needed