In all your examples, state acts as gate-keeper and these are local/national industries. If you have a multi-national company that is monopoly, its very likely to be market granted monopoly.
> In a mixed economy, monopoly exists because of state and market.
No. We live in global economy. Most companies have to compete globally. You might get favours from few countries but not most. Note whether your home country gives you a boost or not, is irrelevent. The success in a foreign country without its govt's blessing, is the question.