An operator is essentially a little function that has one or two arguments. It hides the information you use to make those numbers. If you want, you can invent infinite number of so called operators, to produce each number. They don't even have to take an argument of 4s.
I'm still on 6.x. If they disable that, that is the end of my adventure with Skype. A chat window must be small, no sidebars, no conversation bubbles, no huge profile pics, because I keep it open on the desktop the whole time.
The equipment do cost money, but if it's already there, why leave it running unused? That makes no sense. Like the electricity at night is wasted because it cannot be stored. Every second the maximum capacity is not used, that's a forever lost opportunity to transmit data.
Or just order a replacement from china. You can probably find one cheap in 1080p and matte. That's what I did after mine broke, it was also an upgrade from 1600x900, so I was pretty pleased with the end result.