Bitpay had a article regarding on shops or companies that accept bitcoin open this link
https://bitpay.com/directory/Those are big companies and if you curious about them and want to deal some of your bitcoins then you could do some test to see if they are really accepting it. Since its amazing to see how these big companies adopting to the evolving payment solutions and for that they are reaching up for more potential consumers that always use bitcoin.
That's why there more concerned about the payments in BTC other wise why would a shopkeeper risk his asset as we all know crypto is volatile. There is one reason behind that and it's the taxes and charges that apply on transactions by governments.
Yeah it maybe a concern but for sure constant learning about how bitcoin work can make them realize on how they can take advantage of this coin. That's why maybe instead of getting afraid of it they still choose to accept bitcoin as one of their payment option.