[SilasX]

Interestingly, it's common in the Midwest to add "'s" where it doesn't exist when referring to a brand e.g. calling Costco "Costco's".

https://styleblueprint.com/everyday/why-do-people-add-s-to-t...

[oniony]

It's because shops were traditionally named after the people who owned them. There are still loads of shops bearing people's names, even now.

"Sainsbury's" supermarket used to be "J. Sainsbury's" named after its founder John Sainsbury, &c. "Morrisons" was "Wm Morrison" founded by William Morrison. So when you refer to a shop you say Sainbury's as in [Mr.] Sainsbury's shop, or "Morrison's" as in Mr. Morrison's shop.

Then this becomes so ingrained it gets misapplied sometimes. I don't think I'd ever say Asda's though. But I would say Tesco's, even though Tesco is the initials of three people.

Surely this is the same worldwide?

[celticninja]

As mentioned above, in Liverpool, Asda becomes Asdas. Whether it has an apostrophe or not I don't know.

[Apfel]

Similarly common in the UK, or at least where I am (Glasgow, Scotland).

Completely normal to say "Tesco's", "Aldi's" etc.

[dboreham]

Marks and Spencers.

Wait..make that "Markses".

Some companies decided to embrace the pattern: Goldberg became Goldbergs, Morrisons, Dobbies...

[celticninja]

Same in Liverpool, it's an Aldis or Asdas, neither of which have an S