“What an altrustic act on the part of Microsoft, since essentially all infected computers are running their operating systems.”
Since MS has 92% of the desktop market its pretty likely your statement would be true. Trend micro stated there are a 100,000 new pieces of malware released every 2 days.
But every sick computer could be cured just by upgrading to the latest Microsoft operating system, couldn’t it? That, plus a $500 or so in hardware upgrades from which Microsoft gets a license fee. Don’t you think that’s reasonable? < / sarcasm >