Well, about $2B in cash, no debt, one of the biggest patent portfolios on mobile tech, global datacenter presence, direct links and relationships with over 150 carriers, a manufacturing chain, and still around 60 million customers - and a brand, while presently negative, that is internationally known. At $9 a share from Fairfax, they could do nothing but shut down the company, sell the assets, and make money.
That being said, I have a BB10 device, and I honestly believe they have a quality product. Their problems are more about marketing, advertising, and un-fucking their relationships with various companies and carriers (they obviously pissed in Netflix's wheaties, since they refuse to release a BB10 app, whereas Netflix will put their software on just about anything). Yes, the company was poorly managed these past 5-6 years, but they're not "worthless". They've managed to piss off the carriers and some developers. That's most of the problem.