In fact, I know a caregiver/nurse that does exactly that. She looks after older folk in their homes, usually 6 days out of 7. I understand many of her "clients" require palliative and are usually in their 60's or well above. Whilst "on duty" she does all the normal household thingies, does the shopping, cooks and assists generally. She also serves as a go between in medical aspects, organises the meds and will liaise with doctors if need be. She is also a very useful translator as her English is terrific at about B2 level
In fact, I think quite a useful person to have round I think, almost like a personal assistant. My understanding is, that usually problems only arise when the "client" expects too much. By this I mean that although she normally lives in the clients home it does not mean that that she can be called up every few hours or so, even nurses need to sleep.
From what I gather this generally works well. Her fees as I understand it are about 20k a months .
Not bad when I think how much this kind of attention would cost us in Europe.