I think Geno is a really good coach who was in the right place at the right time, got very lucky with back-to-back-to-back elite recruits almost falling into his lap, and parlayed that into establishing UConn as a powerhouse, thus able to recruit nationally, further fueling the success, etc.
He's been able to do it in a conference that offers practically no resistance, thus a guaranteed NCAA invitation that also continues to fuel recruiting success.
Prior to signing Kerry Bascom he was a good coach with decent results, though not spectacular. Bascom signed with UConn to be close to home for her sick mother. Bascom was elite, helping get UConn to their first NCAA appearance and later, their first Final 4.. With that, after Bascom's last season, Geno got Rebecca Lobo...best player in the nation. She chose UConn because it was close to home and had a great academic reputation. Lobo helped UConn get to their first NC in '95.
In 1995, the National HS Player-Of-The-Year was Nykesha Sales...from Connecticut. Again, Geno was both good, and very fortunate.
After this run of good fortune, UConn had been firmly established as a national power, making it a destination for players everywhere. Recruiting just took off to the point Geno would have to be a pretty crappy coach not to win consistently. The fact they have been able to dominate as much as they have seems to prove Geno is also a damn good coach.