So how many airlines that have filed bankruptcy in the last 5 years said they want to keep pilots around longer so that labor costs can continue to go up?

Five years ago they were winning major concessions in pay so how senior the payscales would become wasn't as much of a concern. Horton, tasked with restructuring AMR (hope I named the right guy) has said very specifically and publicly how he would. He states that reducing labor costs by removing senior pilots and replacing them with pilots of a lower payscale is part of his plan to turn AMR from deficits to surpluses.

After Colgan (even though age was never mentioned as a cause), how many politicians would support the idea of 67 year old captains?

And lastly, does the public support the idea of 67 year old pilots in the cockpit? That is just polling information I don't have, but I'm thinking I could guess where public support would fall.

The FAA has no skin in the game as far as I can tell, and I don't think they would lobby either for raising the age nor against it.

So, ultimately, where does the support to raise the age to 67 come from? People think regionals would be dessimated by the shortage, but I doubt they're thinking that far ahead. All the bankrupt (and profiting) ones care about is reducing costs and I imagine they're drooling at the oppertunity to get rid of their senior pilots in mass and going cheap on the pay scale. Even if it were to their detriment.