The web grew up with .COM. All the key players you mention started running their websites over 10 years ago, when there was not much else they could register that represented what they wanted to do i..e commerce on the WWW.
I'm not saying that .COM is not the most valuable, just that the dependency on .COM will fall. Its a situation that causes a chain reaction in perceived value, and once the myth 'articificial scarcity' is challenged and disproved, it follows that the prices people are willing to pay for each .COM will also fall. Simple logic, but a difficult one for those with vested interests and achieved advantages on the .COM speculative area will admit to.
If we consider that type-in traffic or "direct navigation" makes up only 10-15% of how the web as we know it today is navigated, you may start to appreciate that businesses that want to increase their web presence in new, more targeted ways, can and will drive the engines of adoption and development for alternative extensions. Examples like
http://www.ikea.us
Same will
http://www.billboard.biz , while the site sits on top of their .COM site, there is a clear and deliberated attempt to cater to their B2B brand nemesis as well.
The WWW is a bottomless ocean, infested with 30 feet long sharks. Many businesses recognize, through hard lessons, that no they cannot rule the world just by wearing the emperor's cloath of .COM.
Even the kingpins of .COM visibility, Ebay, Google, Monster - they all recognized the need to extend beyond .COM to ccTLDs and local transactions years ago.
What's to stop Google from stepping on the plate for
google.travel
google.jobs
google.mobi
google.xxx
The brand belief of Google is to organize the world's information. Google showed the world the meaning and power of FLEXIBILITY in one's business model.
The truism for courageous entreprenuership today is to challenge the conventional, recreate the future, don't let it lead you by the tail.
IMHO, it is easy to fall into the cosy trap of what you can immediately see in front of your nose what your brain is willing to understand and accept. I applaud those with the guts, the determination and above all, the ingenuity, to see and prepare for what's behind the corner.
It amuses me immeasurably when I hear people remorsefully remark "I wish I had the forsight to buy sex.com back in 1989", and then blissfully continue to wear their 'Not In' hat in face of an ever changing Internet and web navigation revolution.
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