I rather have that they put effort into getting software to run on "modern" OS. W7 was introduced 5 years ago, the economic life time of a PC is, what 3 years if I remember correctly? I do not know who the 25% of people using XP are, but W7 is proven to work quite well for most applications, I was skeptical to transit, but I am happy with how it performs.
Not sure what I am trying to say, lol. It is good to hang on to a proven concept, but there is a time to transit to a modern platform. End of support, limits on RAM, 32/64 bit and so on give even more reason to change.