and no community remained around Maemo
Mer had never happened.
Firefox OS didn't reach a lot of attention. WebOS ended up being a TV OS. Tizen had been mismanaged to hell and seen as an internal Samsung-only project.
What would you have them do to disrupt the mobile market? Where should they attack? tld;r: a group of talented people get together today, in 2015; to disrupt mobile, what should they do?