In a couple of weeks, the NFL will decide whether to open its doors to a slew of institutional investors, including private equity firms, venture capital funds, and even potentially sovereign wealth funds. The simmering topic has been up for debate, in part because prices for NFL teams have risen so high they threaten to restrict who can be a lead owner. For example, the Dallas Cowboys are now worth $9 billion, making them the most valuable franchise in the league, according to Forbes.