As you can see of the 3,810 Webroot customers we tracked 68% of them moved to a competing product.  Amongst Enterprise customers that figure was over 75%.  Webroot themselves now direct their mail via MS Outlook 365.  
Footnote - I've used the Webroot desktop product and it works fine, this exercise was undertaken purely to demonstrate the ability of our big-data engines to haul interesting and useful data.

 
