[JadeNB]

Can one only submit articles on topics in which one has professional experience?

[WorldWideWayne]

No, but I'm interested in the motivation in relation to their point of view.

But in general, it's beyond me at this stage why people single out Microsoft for being anti-competitive. It's completely unbalanced.

[JadeNB]

The posted article seems to be doing quite the opposite; it is arguing against that perception of Microsoft.

[WorldWideWayne]

It's a really bad example of what the submitter was allegedly trying to point out as you can see from his comment above.