Since the most complex part of a car (IC engine) is on its way out I think we can expect a lot of companies/people with big pockets enter this segment but whether they will make or loose money only time can tell.
I imagine it'll be like the current smartphone market; all the internals are made by a handful of companies with design being the real differentiator
Yet Apple builds as much as it can itself and doesn’t share anything. Which sounds even more closed than the existing car market (who will sell you a drive train, follow standards, and aren’t forever locked in patent wars despite rampant copying).
Dyson has particular expertise in motor design, and I can see this being a big differentiation above aesthetics.