According to Anatole Kaletsky,the debt creation and fiat money printing can continue forever and it can be considered the only economic "perpetuum mobile".The banks,markets and companies are addicted to debt and negative interest rates.Abandoning the current financial system will cause a financial Armageddon.I don't agree with fiat supporters like Kaletsky,but they are still very popular.
The tickets are all financial assets, including fiat money, bank deposits (which are really debt,) stocks, bonds, etc. that are issued by our ruling elites: politicians, bankers, central bankers, corporate elites, etc. Allowing stock markets to go down amounts to devaluing certain types of tickets, something that was mentioned in the original post.
It's true that fiat money issuance has no technical limit, and that the entire economy and system are addicted to over-issuance (as compared to the values of real wealth -- goods and services) which manifests itself in low interest rates too.
But we have to remember, while fiat money can physically be printed to infinity, that is probably not going to happen, and if it does money's value will go to zero. (This was basically what happened in Germany in 1923.) Our rulers don't want that to happen.
In fact, today's state of financial asset inflation (what I called too many tickets for the seats available) is a vicious cycle and not sustainable. Our rulers themselves want to see that torn down, eventually (even though it was they who both caused and benefited most from the asset bubble.) The coronavirus gives them a chance to do just that, and put the blame on something other than their system, for the pain that will come from the deflation.