Do you not consider Zimbabwe an answer to what is the limit. Mugabee could carry on printing forever if the whole world took his money and kept it, the situation escalated because Zimbabwe is an isolated country
People just mined their diamonds and extracted worth directly, they never touched the money because it did not describe trade accurately.
Also gold was mined directly, the sellers gave bread and the workers provided gold from the ground. Again no money was needed to facilitate trade, it was bypassed.
Greece is not a vital country in its exports, the debt it reached set its own limit to their money. They exist from political bargaining but their debt is just a pawn not money easily traded.
what limit do you envisage being set in that scenario?
The limit is obvious the paper becomes worth more then the money it describes.
They can just take zeroes off but this destroys all holders of the currency. So nobody wants to hold a trillion dollars, tomorrow it wont buy a penny chew and everyone needs to hold worth for some period
This scenario you hold is like juggling, its clever to hold more then a few things in the air. In the end its a burden and restriction, people fear losing everything thrown and held in this unstable virtual wealth.
They opt to hold gold or plain bread anything that will last more safely, everybody sleeps at some point. If they cant rely on solid value this is your limit, the money serves no purpose
Part of dollar worth now is that they are a superpower. They have political influence, the middle east oil is sold this way. If many things like this were not true they'd be faced in a constricted situation like Greece or similar where they cannot export enough to provide demand that backs the money and debt.