Once they got a large sum of money, their effort and activities became increasingly focused on power and influence.
Elaborate. How do they wield this power and influence?
Many ways, I will give you a few examples then you will need to use your imagination.
Foundations
NGO
Nothing wrong if they don't use violence to enforce their will upon others except in self defense.
Lobbying
That's corporatism not anarcho-capitalism.
Endowments
Nothing wrong if it doesn't defraud anyone or using violence against anyone in order to provide it.
PACs
That's corporatism not anarcho-capitalism.
Dedications
Nothing wrong if it doesn't defraud anyone or using violence against anyone in order to provide it.
Scholarships
Nothing wrong if it doesn't defraud anyone or using violence against anyone in order to provide it.
Funded Research
Nothing wrong if it doesn't defraud anyone or using violence against anyone in order to provide it.
Advertising
Nothing wrong if it doesn't defraud anyone or using violence against anyone in order to provide it. If you don't like it don't watch it.
Movies
Same.
Books
Same.
Screenplays
Same.
TV Shows
Same.
Radio Shows
Same. BTW in all of these only in corporatism someone with opposing ideas is NOT allowed to freely produce and distribute their own advertising, movies, books, screenplays, tv shows, radio shows ect.
Political Movements
That's corporatism not anarcho-capitalism.
Pornography
Celebrities
Just
etc....
ect WHAT?! You have yet to formulate a valid objection to AnCap.