It's to Metra's credit that they tried running regular service despite the severe cold weather a couple of weeks ago, but in hindsight, I think that was a mistake. You simply can't guarantee regular service levels during extreme conditions like that, it's not going to happen. I don't think Metra has a "snow schedule", but maybe adopting one for next year and beyond should be discussed as a possible solution; I would hope that's at least considered. Because such a schedule with reduced service would definitely have been more appropriate here, besides, many folks stayed home anyway.
Union Pacific removed dozens of cars for service, forcing passengers to squeeze into the remaining ones.
At the peak of the crisis, I estimated about 20 cars or so being sidelined on the captive UP/W rush hour sets; no train was longer than six cars. I expected the painted, re-acquired Pullman coaches to be the ones most affected, but surprisingly, that wasn't the case; most of them appeared to be running (not bad for cars that had been scorned by an east coast poster for having "schoolbus seats"). Instead, it appeared to be older 7200/8200 Budd equipment of MILW heritage that suffered the most failures, but those are slowly returning to service as the situation improves...
This may be the beginning of the end of freight railroads UP and BNSF operation of the Chicagoland commuter services over their respective lines.
I don't think the response of those two railroads to an extreme weather situation like the one recently experienced is going to result in a seismic change like that, there will be other unseen and complex factors at work as well. Not sure how you draw that conclusion...