Interested in Language
What is better to use for a company name?
Microsoft support their Windows operating system.
Microsoft supports its Windows operating system.
Intel is a micro chip manufacturer.
Intel are micro chip manufacturers.
Don't worry, that's not an advertisement!
Yes, I think it is better to use a singular verb.
But if we omit the name, which pronoun shall we put?
So you mean like:
It is typical for Microsoft that it (not they) works quickly.
It is typical for it (not them) that it (they) works quckly.
Sounds strange but you would say it's better than to use "them" and "they".
It all depends on what do you want to imply when you use "Microsoft"
Microsoft Windows (as an operating eystem) Singular
Microsoft Softwares (group of softwares manufactured by Microsoft) Plural
Microsoft Brand (a company as a whole) Singular
Your original sentences..
Microsoft (represents a single company: Singular Subject) supports (Singular Verb) its Windows operating system.
Intel (a single company: Singular Subject) is (Singular Verb) a micro chip manufacturer.