Google should make a Linux
FOR THE CONSUMER desktop/laptop market, Linux has been a non-starter. Sure, you can find many many different flavours of Linux available online, but you can't go to the local Big Box store and get a PC loaded with Linux on it.
For that matter, it's not even in stock these days at Best Buy. Instead, you find versions running on embedded devices such as my friend Tivo and various other gadgets, but it's all carefully hidden away from the end user.
Within the enterprise, it's a bit more complex.