Agree, that's what personally I do, at home, and at all places where I have right to make such a decision.
BUT, I'm a techie with good enough English, to read man's, tutorials, discussion, etc..
And if an average users, without good enough English (German/French/Spanish any language you can find enough resources and docs) would try to put Linux, he/she will have enough of hard time even on smth as user-friendly as Ubuntu, as soon as a small problem rises on the way. In case of windows/popular proprietary soft, there are enough books or just friends/ppl to ask for help.
for point B, there's a big problem: situation with IP and relation to it in USSR was _very_ different from one in US/Europe. And for lot of ppl, especially grown up in soviet era, it's not smth real bad to copy a program/song/movie/whatever. For another part it's still hard to understand what's bad in copying something for personal/noncomercial use. You can often hear things like "If I will not give my 3 months salary to world's richest company, will they loose smth? I don't stole anything from anyone, right? I just make a copy, and put it back.". Things started to change of course, but situation/mentality is still very different. From the other side, here in Armenia, just 1.5 years ago If I'd like to get non-pirated soft/audio album/movie the only way was buying through Internet, which has number of it's own difficulties. It's just 1.5 years we have MS Armenia. The only way you could get a genuine preinstalled windows on your PC, was to buy a brand-name pc/laptop. I can find only local audio or movies non-pirated, I don't think you can find a licensed CD of let's say even Britney Spears, or anything popular/widespread like that, not speaking of situation when one wants something rare/not so popular. So piracy is forbidden by law, but in reality it's the only accessible way for 95% of population to get smth. And we are not talking about very different average salaries in post soviet countries and western countries.
for point C, I again agree with you, for most cases. But let's say do we have smth comparable to Adobe Premier? There are number of free non-linear video editing apps, but they still have a long way, to let's say becoming what GIMP is compared to Photoshop. Well that's a technical question.
Well by pushing I meant more "promoting". For lot of ppl to see linux on a PC, you have to install it at public places, internet cafes, universities and schools not just use at home. Last 2 already got a good deal from MS, so it will be even harder to make them try Linux.
You are in a maze of little twisting passages, all different.