Another case in point is the MSRT results. Based upon results gathered from MSRT over 15 months, the Microsoft Anti-malware Team revealed the following statistics in a June 2006 white paper: MSRT was run more than 2.7 billion times on more than 270 million unique computers. It found and removed 16 million malware programs from more than 5.7 million computers (1 in 311 scanned). Approximately 3.5 million computers had a backdoor Trojan and 9 percent of the infected computers had a rootkit.
That’s nearly 6 million computers better off with Microsoft's assistance. That’s 6 million computers that could have availed themselves of other free and commercial resources, but either didn’t or those tools were bolstered by Microsoft’s adjunct tool. That’s 6 million computers that aren’t trying to attack my computer, generate spam, or being controlled in a massive botnet.
If Microsoft’s actions benefit its end-users (without being anticompetitive) and prevent malware, it would appear to be a positive move for customers.