Here is from an article from the Economist magazine:
One drug he talks about is an antidepressant called reboxetine (branded as Edronax by
its makers, Pfizer) that he used to prescribe to his patients.
Pfizer is a drug company. It is a singular noun.
Why is it described as its makers, which is plural?
The style guide of The Economist says:
COLLECTIVE NOUNS
There is no firm rule about the number of a verb governed by a singular collective noun. It is best to go by the sense--that is, whether the collective noun stands for a single entity or for its constituents.
So it is correct to refer to organizational names either as singular or plural but not both--that is, there should be a constancy in writing.
In this case the author wishes to emphasize the individuals of the company.
