One really needs to look at the ownership types of all 32 teams to see why aren't going smoothly. I'd break them down in several groups we have the uber-rich recent owners whose competitiveness drives them to explore generating revenue, not the need for revenue (like NE, Washington, Dallas, Carolina et.al.). Then there's the old guard that need revenue because football is their primary business interest (NYG, Chicago, Pittsburgh, Cincinatti...), There are a few owners that bought teams because they could and haven't shown a particular drive yet (Seattle...) as well as a few other groups, but the one that everyone should really point to is the flat out lazy/incompetent group. Bidwell's Cardinals are front and center followed by the Lions and a few others.
Where the Rooney's and others revenue streams are limited by lack of capital in some areas, these lazy/incompetent have the resources to do better but don't.
It is interesting to see that most of the poor revenue generating teams also historically field bad teams. Incompetence from top to bottom in everything they do.