Of course they do. Democratic societies vote for people who look after their own interested, and often times, the interest of these people are at direct odds to the interests of American companies. When politicians put the interest of their people over the interest of Western powers, they get labelled as "socialists" or "communists" and a dictator gets installed to stop the "contagion".

Dictators will gladly do the dirty work of repressing the population while giving American companies their cut. And if these dictators forget their place, the US government will send a little freedom their way.

It's not a foolproof strategy, but it works well enough.