The chief marketing officer of Ericsson announced at a conference in Europe yesterday that he thinks Wi-Fi is endangered, and will be soon be replaced by mobile broadband networks. Connectivity won't be hotspot-based, but available everywhere. He went so far as to compare cafe-style Wi-Fi to the telephone boxes of yesteryear.
While there's definitely an argument to be made for the benefits of mobile broadband over Wi-Fi, as several bloggers point out in response to the Ericsson comments, the latter probably isn't going anywhere. Broadband wireless is great, yes, but it's also expensive at roughly $60 per month. And, as CNET notes, new Wi-Fi-oriented devices like the iPod Touch are only extending that service's lifespan.
Well, the prices of mobile broadband can go down rather quickly.
At the moment, Finlands mobile broadbands start at 9€/month and the amount of subcriptions are rising quickly. Still, I don't believe wi-fi as a technology disappearing any time soon.