Or, the reason nothing has happened as a result is because nothing serious happened in the "insurrection". I'm suggesting this as a foreigner in a democratic country (a well regarded example country even), a fact I mention to dispel the concept that I'm crypto-republican or even socially (as opposed to fiscally) conservative. I watched 2020 in America through independent videos and through your news, the two of which are very-tenuously connected.

Very few of the capitol-riot criminals (because I totally agree that they committed a bunch of crimes, and are absolutely criminals) were armed, even with the makeshift weapons seen in the previous year's street riots. And they weren't going to hurt anyone because the capitol police and the secret service were preparing the evacuation while Trump was still talking blocks away. Not because they legitimately feared a coup, but because it's just general safety protocol to not sit around and wait for a demonstration or a riot to walk up to you.

Following that you saw the Democrats care as hard as they could. Some are still caring now. But the message didn't resonate with anyone other than their base - it cost them moderate democrat support and hardened moderate republicans again them. They largely stopped because the voters said "It's a non-issue, we don't believe it as told". (I present this as a self-evident fact, despite having seen poles supporting it, because we all know nobody stops beating on an effective drum.)