BlackBerry built its reputation while it was Research In Motion as a company with products that every old, stuffy business executive needed in their briefcase. When that could no longer sustain their business due to competition, they could not reinvent themselves as something that the next generation of mobile users would want.
If you want to know how BlackBerry lost its mojo in a major consumer market, spend some time with a bunch of British teens.
The phone that once so dominated the UK youth market that its messaging service BBM was even blamed for helping to connect young rioters who fought police and wrecked shops in London and other cities in 2011, has now lost its cool.