Your attempt to confuse here isn't really helpful.
Google does *sell* Google Glass and Nexus phones and tablets and Chromecast and Nest and soon Dropcams and probably more. They are "Google products" branded and sold by Google as theirs.
Mozilla only has one device that it works on directly, the Firefox OS Flame reference phone. The rest of the hardware you see out there is being made and sold by someone else.
And that's not just true of the hardware. Much of the work going on to extend Firefox OS software into areas outside of phones is being done by third parties for their products.