How far can wireless go using unlicensed spectrum? Here's the problem as the folks who are supposed to make the mega-investments see it: sure, 802.11x, 802.16y, very nice, getting to the point where a few years from now, perhpas the technology will be mature enough so we can melt down the copper from the telco. Sounds like a plan. But wait. I won't invest in something if, once I've developed a busienss in an area, someone else can just shoehorn in, shout me down on the spectrum. Sounds like expecting me to invest in a building, but nope, you don't get title, anyone else can just show up.
What's a decent regulator to do?