Good wireless connectivity (good = wide coverage, decent bandwidth and affordability) is a catalyst that enables new and better services. Communication in many areas is now pervassive and available even without the tether of a wired connection.
This isn't a new phenomena, I co-led the original investments in @Road (NASDAQ: ARDI) alongside Pete Thomas (a great investor BTW) now of ATA Ventures in 1998. @Road leveraged GPS, the Internet and Wireless Data to become a leader in Mobile Resource Management (MRM). MRM provides business intelligence on the use of mobile assets - trucks, road sweepers, garbage trucks...) that enables better productivity, work scheduling etc and saves a ton of money.
In the same way that easily accessible communication provided by the Internet changed the way we think about applications, content and services, wireless gives us the opportunity to think about different solutions to a new set of problems.
Here's a recent example, Mapquest is introducing a new range of services that enable a cell phone to be used in place of an in-vehcile navigation system. This is another example of what I call an Infrastructure-LESS Services Company - a company that leverages all the infrastructure that has been built out over the last 10 years including the Internet, GPS, cellular, Open Source (yes, I view Open Source as infrastructure - a set of capabilities that gives leverage in building new things), etc.
An interesting thought to ponder is what other kinds of opportunities does wireless open up in similar ways? If you can, go wireless, if you can't then wired lets you leverage much of the same infrastructure but without the benefit of portability.