I think they missed a huge opportunity in about 2014/2015 to do what CyanogenMod was doing, as a clean/no-nonsense power user variant of Android. Ultimately the Cyanogen company leadership made poor choices and killed their relationship with the largest phone manufacturer that was shipping their OS on the phones (OnePlus), who decided to go and re-implement the same features in their own oxygenOS android build. Thereby killing Cyanogen as a company.