Even now that the battle for internet advertising search dollars has all but been won by market leader Google (NASDAQ: GOOG), market followers Microsoft (NASDAQ: MSFT) and Yahoo! (NASDAQ: YHOO) are still not giving up without a fight. Both internet portals are just shifting as fast as possible to the mobile space. As in, mobile phone.

But Google already is a leader there as well -- and it's something I've heard from Google CEO Eric Schmidt's lips for over 18 months now: the new frontier is mobile. Mobile search, navigation, browsing and related activities will be brought (hopefully) to a more broad audience due to numbers alone. There are way more internet-capable mobile phones in use globally and in the U.S. compared to total personal computers in use. Sounds like quite an opportunity, yes?

But, Google, Microsoft and Yahoo! won't be fighting themselves -- they'll be fighting the wireless carriers who will seemingly provide the connection between cellphone internet surfer and Google or Microsoft. Google is planning to bid at least $4.6 billion on wireless frequencies in an FCC auction next month in an attempt to bypass the stodgy old telecoms. But, companies like AT&T (NYSE: T) and Verizon Wireless -- a division of Verizon Communications (NYSE: VZ) -- sure don't want advertising revenue generated for internet giants using their own networks to just flow right through them.

As such, one of the most significant battles in modern tech history should start to develop in early 2008, lasting until at least 2012 or so. The protectionist-minded telecom incumbents are about to see threats to their age-old business model like they've never experienced. It will force them all to think differently about serving customers and sources of revenue generation. For those shackled to long-term wireless contracts and fed up with shoddy service, it will be a very welcome change.