5 in 10 years will be amazing. Think about it, the LA Lakers of the 80s achieved 5 in 10 years. And that was with an abnormally stacked team in the weaker conference. The Spurs are on the cusp of doing 5 out of 10 in a strict salary cap era in the much stronger conference. If they pull this off, in my eyes they pass the 80s Lakers in the list of dynasties, and sit 3rd behind the 60s Celtics and 90s Bulls.
The Spurs are not on the cusp of doing anything this season.