My opinion is that Skype was killed by the smartphone. I used Skype from probably 2003-ish to 2008 as my only source of a home phone number to interact with people who had a phone number, as I did not have or want a cell phone or a landline. After that, I got a cell phone that people could call me on, replacing my need for skype a s aphone number source, and then various video chat and voice calling apps came along completely replacing the functionality I was using Skype for. Then when Microsoft bought it, that put a very sour taste in my mouth at the time, and there was no looking back.