I'm not trying to justify data collection and I think that certain kinds of telemetry data are perfectly acceptable to be collected. The reason I bring up comparisons to other OSes is that often opponents to Windows 10 mention switching to other OSes which aren't necessarily any better.
With regards to trust in privacy and security, I can't say that I trust Microsoft any less than others. As an enterprise software and services provider, they are in a position where their products must meet certain standards in order to be adopted. The fact that they still are implies there's at least a certain level of trust held in them, unless you're the type of person who feels all companies are in on it.
Speaking of in terms of trusting in long term commitment and support, I would say I have greater trust in Microsoft than just about anyone else. They have the best track record when it comes to not outright abandoning products. You can argue that opensource software will always be supportable, that doesn't mean that it will be supported.