You did not ask me, but that has never stopped me from offering an opinion.
I think Trumpism is a "disease", and I think when Trump is rooted out, Trumpism will go with him. He has a very magnetic personality - and I don't see anyone in his orbit that has that kind of appeal to be able to keep it up. And, I think when he is out of power, he will lose most of the political fringe hanger-ons.
I think you will see the more establishment conservatives, like Liz Cheney, and Romney, step to the forefront and lead a revival of conservative priorities. You will see some like Graham or McConnell who will go back to claiming they never supported Trump. Eventually, the populism will die down - because, quite frankly, its not very popular amongst the country as a whole.
Now, whether the traditional conservative movement can win elections, might very well come down to whether the left-wing of the Democrats rises up (and thus creates opportunity for the right to oppose), or whether Biden can maintain control as a centrist.