As for the consumer market, who doesn't love seeing new ways to do things? Andriod and Iphone are old and boring now, and Windows Phone 8 is not my cup of tea. (Oh, just remembered firefox OS. Is that a thing still?)
Why? Blackberry's grip on the corporate market was destroyed by execs coming to work with their iPhones and demanding that IT depts connect them to the corporate infrastructure.
Remember, IT works for the business - not the other way around.
In particular, Yahoo!'s IT organization kept Blackberry's as the Mobile Platform of choice, for a company whose major future growth is going to come from Mobile Consumer usage - far longer than it ever should have.
Eventually, though, somebody gets around to knocking heads, and IT typically falls in line...
It's over for them.