If GM holding Marvin back, then why has Marvin never left to a better Opportunity/GM?

[*Nately120*]

It's swell the Bengals made the playoffs so many times, but every year there is a team that seems like they just make it only to be a speed bump for the real teams. It's cool that we've done it 7 times with Marvin, but in essence we are like the:

2017 Bills
2016 Dolphins/Lions
2015 Redskins/Texans/Bengals (ouch)
2014 Cardinals

all rolled into one. Huzzah. I could go on, but every year there seems to be one pseudo first round bye of a team that stumbles into the playoffs, and we've made a real streak of being that team. Negative Nately, I know. It would just be interesting to see a team like the Tyrod Taylor Bills go one and done 7 times in 9 years or whatever and send any sort of congratulations their way.