Which system creates a monopoly easier? Democracy or Ancap?

Democracies usually have anti-monopoly laws, but the wealthiest people and companies dont pay taxes (or much less than small competition) and they have debt and assets, making them not only shielded from inflation but profiting from it. (Negative real interest)

Biggest companies get to benefit from cheap loans and if crisis comes, taxpayers will bail them out.

In a Bitcoin ancap system, everybody has option to "optimize" their taxes, everybody is equally protected from long term inflation, but....early adopters of Bitcoin will get a huge advantage over their competition, making them well positioned to goble up competition.