Depends on whether it is OTC options versus a more bespoke product, but in general, counterparty risk is something which investors have more or less appetite for. If you're engaged with OTC options via the Options Clearinghouse Corporation, you're engaged in a system with "approximately but not exactly zero" appetite for counterparty risk.

If you're e.g. the sovereign wealth fund of Saudi Arabia and you call up Goldman Sachs and say "Make me a market in naked puts on Citi, at-the-money, with expiry in a year; I'm thinking about a billion dollars worth", I give you excellent odds on them being able to put that trade together for you. I mean, it will cost you a lot of money, but Saudi Arabia doesn't call Goldman Sachs up and expect it to not cost them a lot of money, now do they.