I'll jump in, despite it being a strange blog post by the Helios author. I could get the same result if I walked up to random "business" people and asked them what a sliding T-bevel is used for. At least he later admits the limits of his question. In the future, don't ask, show! (The comments are worth perusal.)
GNU/Linux is a great OS/system.
Yes, it is. I enjoy it immensely.
IF you know enough about computers to be able to install your own OS.
You don't even have to burn a CD/DVD. You can buy one for $1-$2. If you can install a program, you can install a major Linux distribution in less than 15 minutes, most with less than a half dozen mouse clicks. Seriously, if you can't do this, pay Steve Jobs his ransom.
IF you can provide at least half of your own tech support and know where the help forums are.
Or just know how to fill in a search request on any site like Google, Bing, Yahoo, etc.
IF you can compile your own programs in order to get the latest versions. Etc.
Huh? My programs are updated automatically after giving permission, or I can update my entire desktop environment with about four clicks or a simple command. Never compiled a program in my life. Never will.
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As for the others.
Windows: Drivers? Really? Depends on
how you use IE (settings/options). What's popup ads got to do with Windows!
Mac: The same limitations of any proprietary platform that uses DRM.