Microsoft, like any other large Corporation, will keep their 'business as usual' practices until they get hit with legal costly issues.

As long as they're able to stuff their sw with virus, people willingly spend hours on the phone to get it removed - everything is Ok - eventually MS may dissuade illegals from using their sw, even if it causes huges inconvenience to the vast majority of legal users.

If I were you and had the time and knowledge - I'd sue them.