That's not true at all. Closed source software is available on Linux as easily as it is on Windows, people just tend to favour open source alternatives, such is the ethos of Linux. There's plenty of Closed source software allowed though. Opera, Spotify and Steam being three options I can think of off the top of my head.
I don't blame you for thinking that though. The "on Linux everything has to be open source" myth has been peddled by the FUD spreaders for many years. Its one of the most persistent pieces of misinformation that surrounds Linux.
Thanks for clarifying that. I wasn't aware of any of that. The open source myth has been in my head for a long time.
Anyways, I've tried several distros in VM's. Ubuntu, KUbuntu, Linux Mint, Fedora, Arch (although I couldn't figure out how to install it). All are fun to play with but I can't see using the computer in my sig for one of these distros for my main OS. Just not enough mainstream support. If/when Steam comes out with Linux games I might take a closer look but for me Linux is more of a fun thing to play with than use as an everyday OS.