Smartphones exploded when devs were given a bunch of cool new I/O followed by rapid cost reduction. Shame that the startups doing the cool hardware don’t do that… can’t say it’s the funding. They sure had enough.
A projector is none of that. A projector is a gimmick. The projector could cost $5 and it would still fail to capture an audience if it wasn't just a side-feature on a more conventional phone.