Crypto-themed restaurant is no longer accepting crypto as payment

What are the limitations of using crypto as a means of transfer while basing it and immediately converting it to fiat? If it takes N seconds to complete the transfer or you want to freeze the amount for for a few minutes for convenience, you can just hedge by buying a put option that expires in that period of time. It requires some plumbing sure, but its entirely do-able.

Goldman is doing something similar with FX markets, where they're giving free call options for a few hours for people who want to make deals with currencies without exposure to changing rates. Rather than futures where you're obligated to transact at the quoted price, these are options where the person can choose not to execute at that price. This could be gamed of course and the person could choose to go to the market if rates moved in their favor, but its short time periods and Goldman will likely cut off those accounts that abuse this. And crypto volatility is obviously a lot higher than fiat exchange rates, but the time period could be a lot shorter (think minutes not hours). I'm surprised something like this doesn't exist yet in crypto or is not being used widely.

I think there's just a lot more money and interest in scammy crypto projects (think yield farming, automated market makers, NFTs and outright scams) so no one bothered developing something like this. But with crypto prices hurting hopefully some useful applications now get built.

[0] See FX section: https://www.bloomberg.com/opinion/articles/2022-06-16/privat...