The incumbent British parties are free to fix the economy, build housing, stop foreign wars and make energy cheaper. They don't want to.
The problem is, neither does Musk. We know now that the above talking points of the U.S. Republicans were just election rhetoric. What we got is an oligarchy that takes foreign bribes and gives government money to friends and family.
Musk just got his NASA candidate Isaacman nominated. Isaacman of course is a billionaire, just like Trump, Musk, Lutnick, Ramaswamy, Kushner, Witkoff and others. Isaacman will direct state money towards SpaxeX just like Kushner and Witkoff will benefit from their Gaza "master plan" (wording accidentally leaked by Witkoff in an interview to the dismay of Kushner).
The problem that Labour parties in the EU have sold out since Blair/Schroeder cannot be fixed easily. Musk however is not the solution.