I disagree. People like their car to look new/different, and volumes on cars are high enough that the advantages of a custom platform is worth the cost of designing it.
In practice, I don't think any company is meaningfully splitting up their battery pack to take advantage of "better" packaging logistics elsewhere in the frame/body. I know in this example, they could still likely be loosely attached in the same plane, but with less density under the cabin, but I think my point holds.
That's true in my experience. Though it is interesting that cars look more and more similar over time rather than different.
- People generally like their vehicles to look different but not too different. Design of everything is a fashion industry.
- Fuel efficiency, practicality, and safety requirements all lead to a certain level of convergence.