So, Blackberry seems to have gone. 

A few years ago, business executives were addicted to the mobile email platform … for that is what it was. 

Then Apple – and Google via Android – showed what else could be done by a mobile device… and Blackberry was left behind.    

Remember, however good your product is, however dominant you are in the market. some young upstart (startup!) will be trying to overtake you.  if you rest on your laurels, you get left by the roadside.

This is one occasion where productivity cannot help.  if you are selling the wrong product, it doesn’t matter how efficiently you make it.