People pay absurd amounts for these things because they can't get them in their own community.
What theater are you used to that lets you pick what's shown for $10, vs just a dozen or two movies at once?
> If I can get food from around the world by walking 10 minutes to 20+ restaurants, I won't want to pay $20k to have an 800 sq.ft. kitchen.
What restaurants are you going to where it's cost-effective to eat every meal out instead of doing some of your cooking at home?
> If I can entertain my guests at a community center or beer garden, I won't need to have a $15k patio and outdoor bar area.
What community center are you going to where there's never scheduling conflicts or events? Where you can choose your own landscaping and plants to grow, and do whatever hobbies you want? Where your pet can bask in the sun all day?
Get a bigger imagination about why people want personal space!
(You might also be suprised by how many people in the US can already drive <=10minutes to all the things on your list - and wouldn't see that as a big hindrance compared to walking - and STILL get versions of them in their own home too, to point at some existing evidence to the contrary.)
People pay for the better experience, there are very few places where the apartment experience is desirable, only some where it's a bit less shit.
That said though, I do agree that community options are missing in many American towns/cities today, and I wish people at least had the choice.
You assume it's a necessity thing instead of a desire+wealth thing. Yet the history of the wealthy and powerful "escaping" to large estates goes back centuries (millenia!).
Additionally, the housing affordability crisis is also happening in European cities with 4+ story buildings everywhere and shops and restaurants on every corner.
If you misunderstand what exactly the problem is and what exactly is being desired and what is being purchased then any sort of "build it and they come" attempts to provide alternatives will be limited by the misconceptions, and any sort of enforce-through-policy change will by stymied by lack of popular support.