It doesn’t surprise me that two very wealthy companies have abandoned their plans. I’m an accountant and work in corporate tax for big multinationals. Depending on the structure/location of the Apple & Dyson companies involved in these projects there could be very lucrative R&D tax incentives, along with potential capitalisation of some of the R&D output.
Essentially, even though the projects have ‘failed’ they could still prove to be very very lucrative for years to come, both by way of potential tax offsetting and also inflation of company value via capitalising some of the output.
I should stress, I’m a very cynical person and this is all potential, based on a number of complex criteria. I do not believe any non-car companies who embark on these projects have any intention of launching a standalone model. At most they’ll develop some technology to sell or licence.