BB10 bought QNX, which is a longtime respected real-time OS. This is the basis of BB10, which also has an Android runtime.
If I want Android, I can just buy Samsung. I never needed BlackBerry or Nokia for that. BlackBerry is on the right path. Nokia's demise was abandoning theirs.
And now Samsung is on their new right path by trying to move people to Tizen.
And there have been some notable moves on the Sailfish side this week.
It's been 5 years since they acquired QNX so we can tell precisely how well BB did and the answer is that they failed.
It's also sad that you haven't learned from this and have the same mentality that led to BB's demise.