As long as a currency has just one master, it is doomed to fail

The global financial economy failed to create a successful universal currency for payments in all countries, although such attempts have been made with dollar and euro. According to the American political scientist Steve Samarin, as long as the currency has one main master, it is doomed to failure. 

Steve Samarin, political scientist (USA):

When the euro was introduced in the EU, everyone expected that, at last, there would be a single currency, and how convenient it would be to pay between countries, there would be no need for marks, guilders, liras, etc. How convenient, how good! But this was doomed to failure from the very beginning, because someone controlled this currency, the euro. 
The same thing happened to the dollar. Of course, it is convenient to make payments in one currency, but we see that in case of some difficult circumstances, the owner of this currency can start making very serious problems for the economy and for the economies of many countries, so, of course, now many will reconsider: is it worth using any currency owned by one state at all?It is worth making reserve currencies, and it is time to make most of the settlements in national currencies, and to conclude contracts on this basis. This will restrain many hot minds in the West. And companies will think 100 times, that if the calculation is in the national currency, then why should I have a fight with someone whom I contracted.