Saying .com is the king of the internet sounds like a response from marketing/management. I suspect it isn't all that important and that this will probably be dropped in favor of a practical solution in the future.
# of .us/.info/.me/.biz sites making at least $1mm/yr? 8
Yes its marketing, but that's because consumers pretty much got taught that one of the major ways to see if a business is legitimate is to see if it has the .com extension. Blame all the affiliate spammers who put up the crappy sites on the .info etc domain names to try to make a few bucks by using the bulk method