You're off considerably. The world population is only 7.6 billion, if every single person on the planet used the internet and 3% were using Linux to do so it wo

You're off considerably. The world population is only 7.6 billion, if every single person on the planet used the internet and 3% were using Linux to do so it would barely multiple hundreds of millions (228 million). The actual number of users is closer to 3 billion, so even if your 3% is correct (it isn't) that's not even 100 million. That's also assuming that every user of the internet is a laptop or desktop to access the internet, but that isn't case. More and more people are only using a smartphone or tablet, especially in emerging markets.