I get what you mean. I’m American. Grandparents have extended their independence in their home by 20 years, on land an hour outside of city, because their kids go over every 1-2 weeks to count out their meds, meal prep, and help out with a few other household things. They have done a few periods of livein care while they recovered from surgeries or falls. They’re in their mid90s and it’s getting pretty hard now because there’s some dementia and other issues setting in. They’d have much more help if my stubborn grandfather moved to the city near other family members (we could casually drop off groceries while we’re doing our own errands, etc).
Every case is different, but I don’t think you have to be under one roof to significantly help some people keep their independence and avoid spending money on caregivers that are very expensive especially