Think of two divisions. The Patriots so dominated the AFC East for two decades that they probably depressed the fan bases permanently for the Dolphins and the Jets. Two decades of division wins is unheard of in the NFL.
And then there’s the AFC West. The Chiefs have won the division for nearly a decade now. What realistic hope is there for the Broncos, Raiders, or Chargers.
In both scenarios, it is literally a waiting game for the dominant team to have their quarterback retire.