I think the explanation is much simpler. Inviting both sides is cheap and gets lots of controversy, which sells. Whereas finding and reporting the facts doesn't

I think the explanation is much simpler. Inviting both sides is cheap and gets lots of controversy, which sells. Whereas finding and reporting the facts doesn't get you much attention, takes time (so the story is no longer fresh), money, and exposes you to legal risk if you got any of the facts wrong (and even if you didn't, you may have to defend yourself in court). One option is easy, cheap, quick, safe, and attracts a large audience. The other is the exact opposite. It's obvious which one an amoral, profit seeking corporation would choose.