I think is a bad idea for any OS company to rely on a third party app to properly display help files.

Removing artificial barriers to reasonable competition is one thing. Forcing bad design decisions is another.

Microsoft should not be prevented from providing a complete set of software that meets what are basically essential customer needs.

A decade ago it was much more reasonable for the court to say that browsers were not an essential part of the OS, and the fact that it took hours to download a competing browser over the internet did create a barrier to competition.

Now it is hard to say that a browser is not something people expect to come with their system to provide basic services they expect form it, and it is no longer difficult for consumers to access competing browsers that may add value for consumers.