I think that the way we’re splitting up software monopolies is pretty damn ridiculous in this field. I’m Linux gang all the way, but let Microsoft own the OS how they see fit, and especially the kernel, and instead go after the third party hardware vendors being locked into MS contracts. Just make it not legal for third party hardware vendors to sell computers with pre-installed operating systems, and it solves a lot of the monopoly issues. So no more Dell, HP, etc, with forced windows, make the consumer buy the OS separately.
Could also go after bundling, like OS can’t be sold with office suite software.