Windows is a big clunky American luxury car. It doesn’t go very fast, breaks down a lot, but everybody and his brother knows how to work on it. But the seats are just soooo comfy. The A/C is icy cold, and the stereo is awesome! And while parts and accessories aren’t exactly cheap, there’s plenty of discount auto parts stores that stock just about any aftermarket gizmo you could ever imagine. Oh, and the theft rate is through the roof, so you better have a good alarm installed, too!
Mac OS is a safe reliable car. It’s reasonably stylish and hardly ever needs repairs, but the only place you CAN get repairs is from the dealer. There’s not much of a market for aftermarket parts. While the radio is decent, you can either take the factory radio or not. Same for all other options as well.
Linux is a kit builder’s dream. Just out of the showroom, it’s sort’a ugly, but it’s a powerful sports car that can to 0–60 is under a second AND gets terrific gas mileage. But you want a radio? You want power windows? You want air conditioning? Well, you gotta add those yourself from aftermarket parts. The good part is that for all intents and purposes, parts and accessories are free. Yes! You heard me right! FREE! But the bad part is you better know your way around a tool box if you’re going to do anything but park it in your driveway and admire it from your living room window.