Let's hop in the way way way back time machine and travel back to October 2003.
At that time, Chautauqua ratified a new CBA that was leaps and bounds better than their previous contract and better than the Mesa CBA signed months prior, but still lagged airlines like Comair and even Air Wisconsin's concessionary CBA that went into effect the same day.
In that Chautauqua CBA, FO pay was capped at four years. "But nobody will be an FO longer than four years!"
And for a while, that was the case. Upgrades ran roughly 24 months, with some 18 and a handful just over one year.
Then Age 65 and the Great Recession came, and the overwhelming majority of RAH FOs were stuck at Fourth Year pay.
Now PSA has and soon PDT will ratify contracts with 12/4 year caps, and we hear the rationalization that "We don't need FO pay beyond four years because of movement."
The definition of insanity is doing something the same way, expecting a different result.
Do pilots learn NOTHING from even recent history?!?