The "SDC" in the article is presumably "Samsung Display Corporation", so I guess they R&D'ed the foldable display. I wonder why they wouldn't want to keep a monopoly of this tech for their own phones, and why they'd be willing to sell it to Apple...
But I guess it's clear, the iFoldPhones will sell a lot more units than the Samsung ones and Samsung will still earn that supplier money, and when Apple announces it, it'll be advertisement for Samsung's own fold phones for people who prefer Android.