When he was at Memphis and then moved on to UK, Coach K and Self were not doing the 1 and done to the extreme
All the big schools had rosters with upperclassmen and Cal sold open spots every year and was not afraid to let Freshman play all the big minutes if they were good enough.
Heck, Freshman were not getting picked 1st every year and even the top players went to different schools. KD went to Texas, Oden to OSU, Rose went to Memphis, Beasley to Kansas State, OJ Mayo (huge at the time) to USC.
Once Cal had the platform of a blueblood, he could get the big guys and offer them the big roles and could have package deals to play with their friends and the top talent. Start looking at Drafts after 2010 and you'll see a lot more freshman and you'll see top recruit migrating to the bluebloods.