I’d have a hard time believing any conspiracy that Jody is sabotaging the current success of the team by restricting contracts in order to sell the team for more money. If anything, I would think going all-in right now and competing for a Super Bowl would increase the value of the team more than a bad cap situation would potentially decrease the value of the team.
Buying an NFL team is typically a long term investment, while cap problems are temporary and can be addressed over a relatively short period of time. There’s an extremely limited number of NFL teams, and not all are created equal. Market size, history, fan base, etc, all vary from team to team. Of all the things that could affect the sale price of an NFL team, current cap situation has to be down the list.