Doctors can't build bigger ERs or hospitals, you need physical infrastructure to give patients extra time.

This is laughably out of touch with the actual limits of care. It’s nursing staff and the shortage is a willingness to pay the costs of staffing.

A doctor running their own private practice could do that. Most doctors don’t operate this way. Their boss isn’t going to let them take up additional resources (rooms, nursing staff etc…) so that they can spend 30 minutes with each patient instead of 15 even if they are willing to take less money.