I don't think Stanford delivers the market, but they probably provide more access to the market similar to what RU does for NY/NJ. While olympic sports don't drive money, its certainly beneficial on certain levels to bring the school with the most athletic national championships. Finally, the extra lure for ND doesn't hurt. It also provides an easy travel for USC/UCLA.
Notice how Tiger got mentioned in the first B1G Live show after the announcement of USCLA, but not OJ.