My Observations here:
1.
Linux does NOT pose any challenge to windows vista. Vista is for different people, linux is for different people. Even if vista tries to grab into the market of linux, it will have almost negligible effect since both are completely different from each other.
Linux is for speciality users, power users, programmers, enthusiasts, educational users, home theater users, home PC users, internet cafes, security freaks, certain types of gamers, tweakers and FOSS lovers. Windows is for the "other" market.
Market share of linux has absolutely NO significance to its development, since linux lovers will forever contribute and help make linux better and better, without bothering what some Mr. X, Y or Z thinks about linux.
2.
There is no point in trying to switch from Windows Vista to Windows XP using this methord for most people. There is a very good reason for this: The difference between XP and vista is obvious only in weaker hardware. Once you go beyond a certain point, there is little difference between the two and vista can actually start outperforming XP. Besides this, its actually cheaper to buy vista than XP today, so if you are going to get yourself a new computer, which will obviously be average to powerful by today's standards, getting XP will seem like a joke.
3.
As for those people who currently use XP in their systems, there is little or no point in upgrading to windows vista, even if your system supports it fully, in situations where you are getting your work done perfectly by windows xp. When your current OS does everything you need it to, why switch and buy vista ? To fill money into MS's vault ?
also, ever thought why people in India (or all over the world) are not moving to Open Source softwares though they are free????
Lifebuoy muft mey mile ya na mile, I always use Cinthol
I have NO idea what kind of comparison you are using, but if you mean that a person always uses what he is used to using, you are absolutely true.