It doesn't take super intelligence to give my elderly father a bath or wipe his ass.
I think the main problem is we would almost need an economic depression so that at the margin there were for less alternative jobs available than giving my father a bath.
Then also consider that say we do have super-intelligence that adds a few years to his life because of better diagnostics and treatment of death. It actually makes the day to day care problem worse in the aggregate.
We are headed towards this boomer long term care disaster and there is nothing that is going to avert it. Boomers I talk to are completely in denial of this problem too. They are expecting the long term care situation to look like what their parents had. I just try to convince every boomer I know that they have to do everything they can do physically now to better themselves to stay out of long term care as long as possible.