I have friends who, for reasons that are beyond me, spend dozens of hours a week skyping. For me to try to convince them to, in turn, try to convince all their contacts to switch to something else would be both futile and egotistical. Google's video chat may one day become more interoperable and have more users than Skype, but ekiga.net, like the GNU/Linux desktop, will forever remain the home of geeks and our non-geek parents.
I personally use my Android phone and tablet to do video chat, on the rare occasions when I use it at all (pidgin or texting usually suits me fine). I still have Skype installed on my laptop, and will welcome a free software implementation of their protocol. Fighting the good fight doesn't matter to me if doing so prevents me from communicating with someone I love.