That's an interesting comparison! Especially, because when you look at Linux'es strenghts today, it's on the servers! So, you can think of Bitcoin as some kind of "backbone" that exposes a service and "user-friendly"

• clients interact with those backbone services. Especially because of scaling and usability this is the most likely outlook for Bitcoin's future.
• for me and probably many others windows isn't user friendly, but i think you get the idea.