With daily transaction? and with volatility being present? I doubt. Ofcourse there would be more people to choose fiat especially those who are just not into investments and online payments.
Yeah. Bitcoin value is very volatile which makes it very hard to use as payment method in daily transactions. Imagine if you have 100$ today and you will need it tomorrow for your necessities purchase worth 100$. Theres a chance that you cant purchase your target items which is why fiat is still the best payment method on daily transactions.
The only plus side on OP business was its a cosmetic business which means people doesnt purchase it on daily basis. Her customer has a time to purchased Bitcoin as payment for OP and leave some coins for there next purchased.