What is this disinformation on Lemmy? There are so many counterexamples to this:

• If a patient doesn't find a cure, they'll go to a different doctor and sometimes leave their country to seek help (like when Americans go down to Mexico for treatment). Wouldn't it make more sense for them to fix you so you return when something else happens? Who ever goes to the doctor to stay sick?
• People will always be sick of one thing or another because not all illnesses are transmittable diseases so there's no shortage of customers if you cure them. Delivering babies and cosmetic surgeries don't even require you to be sick for the doctors to turn a good profit. Sometimes people fall and break a bone. Do you really think your doctor will keep your bone broken for profit? When has that ever happened without repercussions for the doctors?
• Most illnesses are self-limiting, meaning you will cure yourself over time and your doctor knows this and will be frank with you if you ask and they'll say "Yeah, but you can take this to alleviate your pain" and you can simply refuse. But thank god you went in anyway because now you know your stomach pain was food poisoning and not appendicitis which may need surgery because the symptoms overlap as is the case with many diseases.
• You can sue your doctor for malpractice and win because they're accountable to a board of ethics. They can lose their license and face jail time for making you suffer by knowing the cure and withholding it from you.
• Evolution will always find something to break, like new mutations to ancient viruses that led to covid/aids and inherited diseases like sickle cell disease. New diseases will always emerge because our world is always changing.
• There is no shortage of new people being born. It's a numbers game: Your case won't be any more profitable when they have 10 other people coming in that same day with whatever illness you have. They need to get people out the door to accommodate more people.
• Not all diseases can be cured, like cancer. And even if cancer is cured, you can't stop it from happening at the molecular level so you always have more customers needing treatment. (And no, sharks aren't immune to cancer, and yes research has made many cancers curable when detected early, and experimental cures are actively offered to the moribund.)
• There are plenty of examples of cures and total eradication, like smallpox and polio. Are doctors making less money because they're gone? Absolutely not.
• Most people who go into medicine are thoughtful, smart, compassionate individuals who want to help people and gladly take the Hippocratic Oath voluntarily. Don't confuse business practices by big corporations with your poor doctor who's just trying to get through the day.

And the list goes on. The image makes no sense.