[slededit]

When you ask for help finding Corona the staff doesn’t ask if you’d like Heineken instead. No it’s not the same.

[thecatspaw]

Sure, but if you ask for a beer, you usually get the sponsors beer without question, even if they have different beers.

edit: talking about bars here

[slededit]

Generic searches this is less of an issue. But see the search for Kellogg Corn Flakes in the article.