Chinese cities are very very dense, and very new due to urban redevelopment projects in the 2000s-2021. For example, the urban core of Shanghai is around 20 miles end-to-end, so the same size as Wichita end-to-end, yet has a population of around 20mil compared to 350k.
This helps sustain both public transit as well as EVs with minimal range anxiety.
The industrial policy aspect of EVs also helps ofc, but big picture it works with the range and size of Chinese metropolitan areas.
The issue is the sprawl factor simply can't be solved in a country as spread out as the US, so long range batteries (looking at you Idemetsu Kosan and Toyota) or hybrids are the best solution in a sprawly semi-urban environment.
The average round trip commute in the US is 42 miles [0] versus 11 miles in China [1]. This means the average American needs to charge almost 4x more often. Alternatively, imagine the range anxiety a Chinese driver might have with an EV with a range of 80 km/50 mi.
When you purchase a vehicle, you also take into account edge cases like interregional or intercity travel like roadtrips, family, or business.
Charging infra can get spotty very fast outside of dense regions. With the sheer density that most of China has, you don't have to worry about dead zones as much. Furthermore, that density also means you have alternative options for inter-city transit (eg. Sleeper Buses, Trains) that don't really exist at the frequency needed in the US.
The differences in expected distances also plays a major role in EV design - a number of Chinese EVs at the lower price range (eg. BYD Seagull, Wuling EV) have much smaller trunk sizes compared to Western oriented hatchback EVs like the Nissan Leaf, because there isn't the need or the expectation to do almost all your shopping with your car when high density urban environments allow you to have various options downstairs or rapid delivery (like 1 hour delivery).
Consumer Habits for Chinese are different from Americans, and the model that worked for China doesn't necessarily work for the US. That said, the Chinese style model would work well in similarly dense Western+Central Europe and Japan.
[0] - https://www.axios.com/2024/03/24/average-commute-distance-us...
[1] - http://service.shanghai.gov.cn/sheninfo/specialdetail.aspx?I...