Bah!
The existence of a "landscape" will limit this "Bing"'s market penetration?
Well, against your Corel, OpenOffice and Linux I give you Netscape, *the* browser of choice when IE went live.
Corel had a nice market. Doctors' offices and lawyers' offices seemed to run on their office suites for many years. But they failed to build to their target markets in any real way, with the result that in the end there really wasn't much difference between their word processor and Word.
The failure of OpenOffice had more to do with it not coming close to being a replacement for MS Office than any "landscape", and in the development teams for it not putting in any real effort to deliver those functions. It simply didn't have features that non-geeks understood, needed and wanted to use (pivot tables for example).
Linux on the desktop is an attractive idea, but impractical unless you know something about computers and are willing to mess around under the hood. This is far from a consumer-oriented product. How many toasters would you sell if every time you wanted to buy one you had to take the cover off it so you could set the line voltage, number of bread slices it would take and so forth? I'm eager for the day a Linux distribution passes that milestone, but none has yet.
Each of the examples from the article is in fact a demonstration that if you seriously want to go up against a MS product you had better understand your market and play to its expectations rather than your own. MS plays this game very well.
As for the connotations of "Bing", I thought of the old crooner rather than the younger loser. Why this is significant escapes me though.
No, I don't necessarily think this Bing will be a Good Thing for Mankind. But it isn't going to fizzle just because Google is there and the Big Guy In The Playground.
Then again, anything's better than Wolfram|Alpha, judging by my attempts to use it.