Its amazing to me that there appears to be clear political interference to allow the building to be overrun, whilst Trump and his entourage watch excitedly in a tent for the latest - but no plan at all on what to do once in there apart from take selfies and generally piss about. I can only speculate they were leaving the details to the autonomy of the mob, or at best maybe they had some of their own people, covert or overt, in there whose job might be to lead the way - but if so no sign that anything came to much.
But even in a best case scenario, what were Trumps circle hoping would happen? It doesn't match up with any real historical attempt of a coup, in that there's no serious attempt to seize power - above all its a performance, or maybe even a re-enactment. Is this just naivety?
This episode looks like a political backfiring failure to me, though sometimes what appears on the surface doesn't match longer term plans. Perhaps as an escalation in what's possible it's a success. Was that the ultimate goal?
Perhaps these people were set up to fail - perhaps go down in flames as martyrs? None of us here can know for certain the answer to this, but I'm struggling to even come up with a hypothesis of what Trump and co dreamed might happen. Maybe they didn't get further than "wouldn't it be cool if we got our supporters to storm Capitol Hill?
I think the latter is about right. There's not a coherent plan or even an ideology. Those in power who've sided with Trump have done so for political expediency. Others are doing quite nicely out of the whole circus, youtube followers, rabble rousing, attaching any old longstanding grevence to the anti establishment eyre of the Trumpesphere.
As already said by others, the followers are a lot of angry people who feel their lives have been thwarted or failed by modern libral democracy. Trumpism is just the biggest moving vehicle to get on board. A lot of them actually say as much. When he's gone, that anger and energy will go somewhere. Disapate or maybe someone with an actual vision will marshall it.