Do you see Canonical or Microsoft producing hardware (successfully)? I don't. They produce software for OEMs to install. Jolla is seemingly intending on being both a software company and an OEM. And that's why OEMs don't need to differentiate on "task switchers" - they don't work on them at all, for the most part. They take software that someone else has written, put it on their own hardware, optionally with some of what they consider "value added extras" (mostly crapware), and sell it off.