To extend on your point: they have been presenting ridiculous concept cars for decades, if there is anything to read into the observation that the current crop of ridiculous concept cars tends to be electric it is that they are serious about phasing out their dependence on the business of building internal combustion engines.

Which will still hit them hard, because the value of wrapping a giant battery in a car is about as low as wrapping a combustion engine in a car. The difference is that they made the engines in-house, whereas the batteries will most likely be third party commodity parts. They tried setting up their own battery production lines, but utterly failed at making them at competitive prices.