Lol you just reminded me of this. I just paid a visit to KFC to visit family - I haven’t been there in years and at the time believed they served Pepsi, 7Up, etc. Imminently finishing my order at the counter, I walked up to the soda dispensers before finding that they serve Coca-Cola along with Sprite.
And TIL my country has been doing it since 2016.
Not sure if this is also happening in other countries, but they have for here.