Willtalk and Geno-ista - it is an interesting question and not an easy answer:
On one side, there is no question there is more competition from other schools taking basketball seriously, and there are better coaches across the spectrum today than in the pre-2000s. That made the early competitive environment for Geno easier to navigate and to distinguish himself in.
On the other hand, for all coaches complain about lack of fundamentals in recruits, there has been an explosion of talent and athleticism and participation in sports by girls at all levels, and an explosion in the money, resources, and facilities available to college coaches which makes the process of building a program and competing at the highest levels easier. Add in the greater publicity for successful programs and much greater TV coverage which doesn't hurt.
On balance I think it is easier for newer coaches to break into the big time now than it was, and the pay is so much better that it is attracting better candidates. It is possible that we will reach a time where the building of a dynasty in WCBB is as unlikely as that in MCBB, but until the best talent leaves after 1 or 2 years in the women's game which is a long way away on current form, it will not change appreciably. Recruit a Breanna Stewart and you get four years to build around her. String together a run of Tina, Maya, KML, Breanna, and Moriah and watch out.
You look at what Kim has done at Baylor .829 win percentage and two championships in 15 years and it compares well to Geno. Jeff at Louisville .735 win percentage and two NC games in 8 years, or Dawn at SC .677 win percentage in 7 years. All comparable. And Geno himself has improved his record in each ten year segment as the competition increases around him.
No knock on what Geno and CD built nor on how special they are, and they will likely rule the universe as long as they want to, but the game is still ripe for the next such empire builders.