Anyone who has been around long enough knows not to trust Google, Apple, Facebook, Oracle, ... Microsoft is not uniquely untrustworthy when it comes to big multi-faceted companies. As for DNA, I haven't seen any dodgy behavior in the OSS area for 5+ years, and nothing like EEE since I started working here in 2007.
No, Microsoft is a special case because they have always been at best amoral; they have been a cutthroat, even malicious company. Recently they've softened their behavior and image, but it's really a very recent shift and given their past treachery it's hard to trust them.
These other companies may not always work together in harmony, but at least they aren't preoccupied with extinguishing their competitors and dominating ("owning") their users.
Microsoft is a special case, but not for that reason.
Microsoft is a special case because they had a zero-sum game/scorched Earth mindset, and the ability to lose billions of dollars per year, indefinitely, achieving it.
Microsoft was not content at allowing potential new ideas/technologies develop which might grow the market and improve things because they saw everything as a potential threat to their position. So they would do everything from trying to poison the market, to pouring (losing) tons of money into competing products, and sometimes just buying up companies and let it rot.
The very special part is as long as Windows and Office were cash cows, stock holders weren't willing to lead a revolt for Microsoft losing billions on everything else.
Not all companies are not scorched earth (SGI gave away serious resources to Nvidia, Valve recently gave away their VR tech in the highly publicized layoffs a few years ago).
Other companies might like to play scorched earth, but they don't have the ability to piss away money like Microsoft. This is why Microsoft is a special case.
Microsoft still has tons of cash and Windows/Office is still a cash cow. And it is generally accepted that company culture is hard to change once established (especially here on HN). This is why people with historical context do not trust Microsoft, with good reason.
