In ancap utopia:

Step 1: Form a gang of marauders

Step 2: Rent all the courts in a village

Step 3: Rob everyone, or pollute their river or extract their resources

Step 4: Have your privately owned courts render a verdict of innocent

Step 5: Profit (because of arbitrage)

Having governments doesn’t eliminate this. Similar things are done all the time by elites in a country, or OPENLY by state capitalists extracting resources from other countries like UFC in Guatemala or BP in Iran. Except they are done systematically and no one can challenge it. Read Smedley Butler from the same time frame. Erdogan even tried to go one further and fire the entire supreme court because they may have convicted his son