"I strongly suspect, with what a spyware-fest Windows 10 has turned out to be, Linux is gonna get a BIG boost in users in the not-too-distant future, once joe-six-pack figures out all of *his* data is now Microsofts... "
The eternal wishful thinking of "The year of Linux on the desktop".
Most people already keep their personal communications in Hotmail or Gmail already, so I don't see too much of a fuss going on. Concerned people will just stick with Windows 7. If anything, Joe Sixpack will pick up a tablet* for his casual consumption once his laptop or desktop becomes too sluggish or dies. Things are going in a simpler direction, rather than more fiddly.
So, unless you want to qualify Android as Linux...
(*I'm not talking about business computing/gaming/enthusiasts, so calm down.)