It used to be that this team was the crown jewel of Bay Area sports. 5 Super Bowls, the oldest team in the Bay Area, and the oldest professional sports team in the entire state.
ALL 49ers fans are frustrated with this team and the ownership. 49ers fans in San Francisco proper have simply abandoned the team after the Yorks decided to move the team to Santa Clara.
If the Raiders can win another Super Bowl or two, the 49ers will no longer be needed in the Bay Area. Their Santa Clara stadium deal will have collapsed and, by that time, the city of San Francisco, scorned and alienated and in love with the Giants and Raiders, will not want anything to do with the 49ers. At that point...well, you know.