rplarry, Here's my take.
The distributor's for DosXX, Tecate Etc. have made exclusive agreements with many of the bars and restaurants in Penasco to stock
and serve only their products.
I know when I spoke to one of the owners of JJ's Cantina about getting rid of Corona products he said
the agreement he made with the DosXX, Tecate distributor helped save JJ's after the 2008 recession and it would be really
really, hard to step away from the extra $$ it brings in.
He knows he lost some customers by not stocking Pacifico, Modelo and Corona. (Me 90% of the time I'm in Cholla).
When I do go to JJ's I make sure I wear a Corona or Pacifico shirt, if Joe's there I stop to say hello.
10-12 years ago you could get Pacifico/Corona etc. most everywhere except Manny's, The Pink Caddy and many of the bars
along the Mirador when it was popular. I suspect that's where the DosXX/Tecate made their 1st deals to take over Penasco.
I'm surprised that Budwiser in Mexico (AmBev) which has the rights to Corona/Modelo etc) hasn't flexed their financial arm
to do the same thing.
When we go out to eat and I'm going to have a Cerveza here are the places I know have or had Pacifico/Modelo/Corona products.
The Cholla Oyster House, Playa Bonita Restaurant (Puesta del Sol), The Point, Mary's and a couple of others at the fish market
Any updates to this are welcome.
It may have changed in the past few years since we're not eating out as much since my wife went to a low carb diet.