> I'm almost sure there's not even enough resources like energy and metals to create a good infrastructure in every country
As better public transport infrastructure vastly reduces the number of cars, and centralizes the requirement for both material and energy, I doubt that is the case. Buses and trains need far less of both than the population-equivalent number of cars/motorcycles.
Infrastructure is not only cars/buses. It is also: roads (paved roads), electricity lines, water pipes, bus stops, traffic lights (you won't find many traffic lights in SEA countries), train stations, railroads, etc.
It's evident if you live for several months in almost any SEA city, that they lack even basic infrastructure. I'm sure it's not only matter of negligence, they simply cannot afford many things that people in developed countries see as granted.
I agree on the difficulty of distribution of resources, just not the idea of there being a lack of them. Maybe not relevant for any practical purposes.
As better public transport infrastructure vastly reduces the number of cars, and centralizes the requirement for both material and energy, I doubt that is the case. Buses and trains need far less of both than the population-equivalent number of cars/motorcycles.