What makes you think they're not worse?
Microsoft has sued (often into the ground) many more companies and individuals, and put many more people out of work, and caused many more suicides, than all of the movie/music industry put together. By (I'd guess) a factor between 2 and 10.
You must not know any individuals whose lives were ruined because Microsoft lied outright, broke their promises, stole their products, and ran them into the ground. You must not know any company that has been drop-kicked by a Microsoft software audit, and forced to layoff a lot of people, or fold. Well, I do.
The movie/music industry is a bunch of pikers compared to Microsoft. MS did not gain their reputation of being evil for no good reason. I'm pleased they're improving, of course. And I look forward to a happier day when Microsoft decides to cooperate and play well with others.
But it's not paranoia to still distrust them.
People who lose their lawsuits are usually wrong. And the RIAA has sued thousands more this year alone than Microsoft ever will.