Maybe that's part of it. I'm sure another part of it is that Ford is already big enough, that there isn't a lot of growth potential there.
That said, it's not like they are exactly just making small refinements to gasoline engines, while SV companies are the only real innovators, chasing electric and self-serving vehicles. We just tend not to talk about it as much on HN (compared to Tesla, for example):
https://www.google.com/amp/s/electrek.co/2017/01/03/ford-new...