because it then needs to go to Bittrex (or someplace else) and exchange those SBD for fiat in order to pay his suppliers (Munhowen, Heintz, etc.)
Or better yet work on getting the suppliers to accept it. Not all will of course but start with even one.
Theoretically, yes. In practice you are envisaging a small bar owner, who is already taking the risk to accept crypto, going out on a limb to persuade a big bulk seller of beverages which has hundreds of customers like him and is big rigid corporation to accept payment in crypto for bulk orders .... I'm a dreamer myself but ...
Maybe its not the big bulk seller. Maybe it is a local flyer that does advertising, or paying the bouncers, or ....
I agree with you that trying to convince a huge distributor from the local bar level is not the way to go.