Apple is very pro-patent. That means they patent everything they work on even if they don't really plan to use it. They're a successful company because they develop in many areas, which includes areas they don't plan to enter immediately if at all. This is why they don't play catchup all the time.
Ad support is a technology, a tool. They are just getting a tool in case they ever need it to complete a product. It is like how you have a bunch of screw drivers at home so you don't have to go out and buy one screw driver every time you find out you need it.
Ad support is a technology, a tool. They are just getting a tool in case they ever need it to complete a product. It is like how you have a bunch of screw drivers at home so you don't have to go out and buy one screw driver every time you find out you need it.