Engerek01: One more thing regarding windows-Linux compression.
Let's see the rising technology of the decade. Smart phones. And as far as I know, There are 3 leading operating systems; Android, IOS and Windows. You might have heard that both Android and IOS are Linux based. Why do you think they are a lot faster and more stable and windows phones?
That's one of the reasons Microsoft is desperately trying to maintain the balance by forcing people to use windows 10 on both their phones and windows. That trick did not work. In fact it back fired. Have you noticed the Linux or Free-Dos operating system market share in the last decade and how it inclined compared to earlier?
EDIT: Apparently I was mistaken about ios being based on Linux. Maybe we can say they are cousins.
Some things to note:
Android does use Linux (the kernel), but it does not use the GNU userland that is generally associated with Linux. This means that you can't actually run GNU/Linux programs on Android unless you supply enough of the GNU userland to get it to run (for example, by rooting the system and installing Debian in a chroot).
Interestingly enough, the Windows Subsystem for Linux (WSL) allows the GNU/Linux userland to run on Windows, but it technically isn't Linux as it doesn't include the Linux kernel; rather, Microsoft wrote a subsystem for the Windows kernel that implements the Linux ABI and the ELF executable format, but which contains no Linux code.
Magnitus: However, with Windows, the open-source software ecosystem is poorer (try to find good software to tackle zip/tar archives in Windows, it is an exercise in frustration sorting through commercial offerings and malware for a basic piece of software you'd expect to just be there), you'll have to content with whatever choice Microsoft makes for you (and if they decide to spy on you or lock most of the software behind a store, well, tough luck), you'll have to give them ~100$ in a couple of years when the current version of your OS goes end of life and if you have several computers, you'll have to pay for several licenses.
Of course, you could just use WSL, but you might argue that it's cheating for purposes of this discussion (do you consider WINE, which is similar but in the opposite direction, to be cheating here?). There also exists cygwin.
TheDcoder: Older consoles are technically DRM-free because you could just duplicate the games by creating images of the disk or cartridge and flashing them.
Actually, copy protection (which I consider to be a form of DRM) has been a feature of consoles from the NES days. Note that the NES has a chip (the 10NES) that exists solely to prevent unlicensed games from running on the NES. The Famicom Disk System has a "Nintendo" logo inside that must match the "Nintendo" logo on the disk for it to run. Game Boy games must contain a Nintendo logo (or at least half of one, as it turns out) or the game will not boot. I believe at least one Sega system also had a mechanism where, if the cartridge doesn't say it's licensed by Sega, the game won't run.
(Of course, these early copy protection methods are easy to spoof.)
Anyway, if you care about DRM-free, I can think of a good reason to use Linux over Windows; Windows is DRM-encumbered since XP, Linux is not. (There is something called DRM in the Linux kernel, but it's not the same thing; it stands for Direct Rendering Manager, I believe.)