The pieces appear to be falling in place for wireless broadband: Sprint Nextel says its next-generation high-speed network will be launched in a few markets by the end of 2007. Intel plans on embedding so-called “WiMAX” enabled semiconductors in laptops by the end of 2008, and the Federal Communications Commission on May 1 approved a laptop device that will receive WiMAX signals from a company called Clearwire. Other companies, such as T-Mobile, are supporting hybrid wireless networks so devices can hop between technologies. Although these developments could be the Next Big Thing in broadband wireless access, it’s too early to say where this will all end up. For years, the industry has had a crystal clear vision of how users will connect to the Internet in the future: High-speed wireless devices will allow consumers to watch videos, share pictures, socialize and do many activities that haven’t even been thought up yet.…