The electric car industry hasn't remotely boomed. Electric cars are still deeply strangled by two key factors: industry inertia and the cost/supply of lithium batteries. Once those two factors are solved (and a build-up of lithium mines is key to that) electric cars will go from being a niche within a niche to utterly dominating the market very, very quickly. Within the next decade we might see companies like Hyundai…
The business plan always was to start at the high end with the Roadster, then the deluxe sedan and then the affordable Model 3. The Model 3 has cheaper door handles than the Model S.
Tesla is about building car factories rather than cars. Once you have the robots doing as they are told then you can make whatever you want.
If you had to recycle a Lamborghini and a Dacia Sandero then you would probably end up with near equal piles of raw materials for both vehicles, give or take a bit of steel.
The other input is energy. The cylinder head on the Lamborghini takes a bit more work to make than the lump of iron that comes with the Dacia. But, if you have built out lots of renewable power then you can get those CNC machines and other robots doing overtime.
Tesla with their vertical integration business model are finding customers at their price point and they can't make cars quick enough. Despite the sceptics, it is working.
Personally I think the budget space will be filled with an electric version of a 'Dacia Sandero' but made in China. EVs are more pleasant to be in as there is not the vibration and noise from the engine, or the local cloud of pollution.
Because of this and the realities of driving in city/town areas there really is a need for a vehicle far simpler than a Model 3, something without the bells and whistles. Honda have something in the works that is nearer the brief. They are going with a low range EV that is not going to pretend to do hundreds of miles on a charge. This is for the two car family where car two just needs to do the shopping, pick the kids up and get into congestion charging zones. In China there are plenty of BYD fit for purpose EVs that are budget and will be making their way to Western markets in due course.
The legacy brands in Europe and the USA are stuck with having to do things the old way with existing supply chains. To make an EV all they need is to buy the bits from Bosch and shove them in to final assembly but they aren't doing it.