It’s the toughest problem for this very reason but thats why freedom of competition is critical here. We can allow systems to self correct through incentives and protections and thats exactly what most western democracies are doing!

Diversity has been hijacked as a ideological word but its literally the best and most sustainable long term strategy even in rigid markets like investment (I.e. hedging, index funds etc). So diversifying power, despite blocking, is really powerful despite what current autocrat wannabes want us to believe.