Because a Tesla has more electronics, sensors, software and FSD than ICE vehicles, all of which can be part of the platform, the difference between two vehicles on the same platform is proportionally less. It is also easy to vary the number of modules in the battery or to add extra motors to alter range and horsepower. The differences between a regular pickup and cyberpunk will be significant but less than those between ICE of equivalent design.
I liked your post but disagree with some of your conclusions. That is, your conclusions were valid only one generation ago, about five years. In the current generation things are vastly different, influences IMHO strongly by Tesla. Examples are in order:
First one of the highest volume cars sold in Brazil is the Chevrolet Onix, a cheap hatchback taht is the best selling hatchback in the country:
Novo Onix Premier 2020: o carro hatch com Wi-Fi da Chevrolet
why waste space here for that?
GM Brazil Suspends Delivery, Recalls Onix Plus Because of Fires | The Rio Times
The English version is short of detail. The recall is to make a
Software update. Tesla recent made an OTA update for a similar reason.
Then right now Jaguar I-Pace has OTA updates for BMS and most other functions. The VW BEV platforms will all have that capability as deos the Porsche Taycan. The Jag has segregated updates because the systems obviously are not integrated, but it is OTA. The VAG platforms are known, I am told, to have been integrated by design.
These examples are simply to illustrate that there have been major investments to learn from Tesla success. All those systems are taking years to adopt, so Tesla remains well ahead. However, what we see right now is that the competition is not standing still so platform interchangeability is happening right now. As in the Jaguar and Chevrolet cases this is not necessarily obvious at end-customer level.
FWIW, I am in the process of buying an I-Pace. I have had to show the dealer how to enable OTA updates, since they did not know it was possible. Will Onix owners have the slightest idea that the update to their econobox is happening OTA, but at a dealer? Probably not!
All of us as TSLA investors should be cautious about dismissing competition because they do not have battery capacity and BEV integration experience. ICE itself is in the midst of a technological revolution that is preparing all those sleeper OEMs to cope with Tesla innovation.
Last point. Any of those OEMs which have Formula one or Formula E experience know how to integrate total vehicle management in real time. None of them have scaled those capabilities. Some things have happened such as the I-Pace motors and BMS.
The better these automakers do the better for Tesla! The key is raising BEV adoption, not making Tesla market share of BEVs higher.