To get a new stadium and public support for it, a successful team can get the ball rolling by generating that kind of momentum. The Vikings' needs have changed from 1961 to 1981. Metropolitan Stadium in Bloomington was home for 48,446. At present, the Metrodome, since 1982, is home with a capacity of 64,121. The economics of professional sports have changed because of free agency.
Parity prevents large markets from dominating smaller markets.
The only way to make additional revenue is through stadium income. The Metrodome is not a competitive NFL-standard facility anymore. Fan amenities and services, including restrooms, concourse width and concession stands, take away from the fans' game-day experience. More seats would enable more fans to attend and allow a lowering of some ticket prices. It's going to take a public-private partnership to get the job done.