The reasons I hope Google gets their act together is because they are in the right place to do so. They have the mindshare, just need to execute better and network effects may kick in. It also doesn't matter if they have the best platform but none of my friends/family use it. Again, Google is better positioned to make that happen, IMHO.
I don't know what Skype Lite is. I use Skype for Linux Alpha. Is that it? It seems to be missing video calls, the chat interface is complicated (spent some time trying to find the chat while in a voice call), it doesn't integrate well with the desktop (it minimizes when I close, instead of hiding in the tray). Like I said, they are improving.
As for Signal and converting people to some technology I know is better... Sorry, tried that too many times. It's not worth the time invested. These companies will have to figure out how to increase their market share without depending on tech enthusiats.