Well, it's been a while (1991) since Linus Torvalds asked for help on his new project, i.e., creating an OS he could use which wasn't too expensive for him. He was a student then, with limited funds. Now, 24 years later, Linux has come a long long way.
Not many people know this, but the Linux OS runs on every supercomputer on this planet. It runs on every Android phone on the planet, as well as every Chromebook and every Chromebox, not to mention a shitload of servers. One company surveyed businesses around the world and found that 78% of them run free software, like Linux.
