[TomMarius]

What about harder disabilities? What about multiple disabled people in one vehicle (Prague public transport can handle only up to 2 at a time, and their space is combined with space for child strollers and standing people)? What to do when the vehicle is full of standing people? What if the bus stop is too far away either at origin or at destination, or if you need to change vehicles during the route? Have you ever tried it, have you seen how much physical effort it requires?

And let me correct you: the majority of disabled people with more serious disabilities sit at home because going outside and getting to the bus stop is too hard for them.

[Symbiote]

People with more serious disabilities can use "Dial-a-Ride", since Transport for London recognize that road transport is more suited to the final 0.0001% of the public.

https://tfl.gov.uk/modes/dial-a-ride/

[TomMarius]

And the rest? How do I go around buying food for a family of 5 for a week?

[KJKingJ]

Delivery. Although it's a fairly new concept with US grocery stores, supermarkets in the UK have offered delivery to your door (or even a place of choosing inside your house/apartment etc!) for over a decade. I just place my order online, pick a 1-hour timeslot between 7AM and 11PM that i'd like it delivered (any day of the week) and it magically arrives.

If anything, it's even more convenient than going in person. I'm not spending ages having to drive to the supermarket, trudge round picking up everything, going through the checkout, loading up the car, driving back etc. I can place the order any time, from anywhere and it arrives when I want it to.