The biggest problem for me is that Comcast does shitty things with the devices that they provide to customers. The CPE Comcast gives with their highest XFinity plan comes with "unlimited data", but if you refuse the device they charge an additional $30/mo to get "unlimited data", because they use the CPE to enforce customer-hostile QoS and throttling to negatively impact throughput and performance. When you use your own equipment you aren't impacted in the same way by this (with some exceptions, which you can workaround). The $30/mo fee is really just a "fuck you" from Comcast to try to get you to give up or abandon the idea, but is completely meaningless from a revenue perspective.

Comcast's problem isn't that they can't afford to provide the service you paid for without the caps, it's that they're oversubscribing their backbone so heavily that they would never be able to do it from a technical perspective. The reality is most people don't hit that cap, so the cap is actually meaningless and does nothing for large consumers. It's just a consumer-hostile practice, where Comcast is trying to take ten miles where they were given an inch. This FCC is just going to codify it though, the FCC has been in the pocket of one provider or another for the last 15 years at least.