Charlie Gard was taken care of in a charity hospital, and the care they gave him prolonged his life by several months.
No amount of money in the world could have saved him. The disease he had literally prevented normal function in every cell of his body. There is no cure for that. Modern medicine can do a lot, but it cannot fix a body when every cell is defective.
The "doper class" on this forum seems to think that marijuana is the answer. As a parent, I would have tried (and paid) anything, even to save an aging dog.