When cities are walkable, grocery stores are nearby too.
I live in a small town in the American midwest, considered very walkable, lots of bike lanes, etc.
We don't have smaller retail stores within walking distance. Instead we have big-box grocery stores like everywhere else.
We _used_ to have those but in the late 50s they were zoned out of existence.
4 of us actually live 2 blocks from the grocery store and I think someone gets a couple of bags every other day. The "10 bags of groceries" shopping trip is actually an effect of cars (and suburbanization). When cities are walkable, grocery stores are nearby too.
I think it's obvious that just like a family of 6 can't fit on a bicycle and would need a SUV to go to Florida, you'd need a big vehicle to get a TV home. Presumably, you don't buy a TV every week.