Because they haven’t implemented it. Apple is rumored to have something like that coming out soon, but nothing Apple does is rushed. They’ll wait to see how the competition does before they jump in. They haven’t released a truly innovative product since the iPhone.

They have improved a little.

They are still working on the subscription plan. After all, you have to squeeze every dollar out of your customers. Never ever given anything for free if you can charge an excessive fee for it.