Traffic? Parking?
Yesterday I went to a neighborhood corner coffee shop that I'd never been to before. They had a little parking lot across the street that was full (and a disaster, I had to back out onto the street), so I had to park around the block in front of someone's house. All the street parking near the shop was full.
I suppose that wouldn't be so much of an issue if there was a lot more of these shops, but then they might not be economically viable.
> People would rather stay marooned in the middle of an endless desert of houses with essentials being a 30-45m drive away
There's a lot of space between "walkable" and "30-45m drive away." I can literally drive all the way across my metro area in about 45 minutes, passing dozens and dozens of grocery stores, coffee shops, and restaurants during the journey. A 45 min drive is a huge distance.