Well that SOUNDS lovely, but in all honesty is likely only available to the wealthy. Because something like that is going to cost big bucks. Probably more than the at home care is costing.
Like retirement villages - again a nice idea if you can afford it, but most people cannot.
The reality is that this is due to cost cutting, so the cheapest option is going to happen.
Currently you will be assessed and have a budget that you can use to bring in your own help - YOU get to choose who that person is, what they do and when. If you receive PIP as well (which is non means tested) and enhanced mobility, then you can use that for a vehicle, including adapted ones, so you can get out and about. If you are able to work, then your assessed care funding may be reduced, but again, you have the autonomy.
Currently if you have little income to pay for care, then you may be reliant upon Adult social care to provide the care in your own home. Up to 4 times a day, probably 30mins. That is the max. They wont use the value of your home whilst you live there, or while a spouse lives there, but will take into account any PIP you get. You wont really get a say as to when you get up or go to bed, or when you get fed.
Once you get moved into residential care the council will want your home sold to pay for care. Its unlikely you will meet the threshold for your care to be paid for by the NHS, you can literally be days from death and it not qualify. Once your house is sold and those funds used up, or you lived in rented, they will take all your PIP, any other benefits, any savings over a set amount, and leave you the grand total of £34.50 for personal use. You wont be getting many taxis out of that - especially if you also need to pay for someone to go with you, or an adapted car to take you.
Assisted living flats and supported living homes with very small numbers of residents are currently available, and many disabled people already live in them. But this is seemingly too expensive.