Such systems benefit the better off and if it was popular would only have given Dialup speeds. ISPs I know just thought it a huge waste of time and money rather then worrying about the competition.
The competition issue is a face saver for the council for a system that whould been very expensive and not delivered.
Clearwire is an example of how good it would be.
This is how good HSDPA can be too:
For semi nomadic or Mobile Internet in Dublin there is
Digiweb Mobile: Up to 5.4Mbps Flash-OFDM (with upto 16Mbps capacity per sector) (900MHz)
IBB Ripwave: SCDMA, upgradable to WiMax (3.6GHz)
O2: GPRS/EDGE/3G/HSDPA up to 3.6Mbps a sector
Vodaphone: GPRS/3G/HSDPA (no 220k EDGE)
3: 3G/HSDPA only.
Clearwire: Semi WiFi like service.
There is also choice of several high performance fixed wireless services and Cable, one can do up x3 better than typical DSL from eircom (Digiweb Metro). More Alternatives to eircom in Dublin than anywhere,