I'm quite disillusioned about the Web as a collaborative development environment. The people who say it's a fair environment are often the most vicious. He's appealing to your honesty, not telling you about his. Actions speak louder than words. I trust the universe, but I know there are pigs out there.
Good fences make good neighbors.
This is our format, we created it, our tools and servers make it work. We're open to competition, even seek it out, but on fair terms. So now, while we're still at the starting gate, it's time to make this clear. If you don't like it, compete at a file format level now, or later. We will allow people to make backward-compatible formats, that's clearly a good thing, but we won't allow you to use our goodwill, our copyrighted material, or our trademarks.