Hi,
thank you everybody for you interesting comments.
I agree with MJ Ray that using this font is more "mere aggeregation" than linking. The interested company wants to install the font in the OS like any other font. So the font and the product of the company are 2 unrelated works (thanks Simo).
Sam: The ttf file itself is the source in this case. I never had anything else.
So I think the company is allowed to give away the font with their product if they include a copy of the license...?
Thanks Lars Naber