Using the data to target ads is as good as sharing it with third party companies. Apple is monetizing you, ostensibly at some point they can just stop making products and survive by advertisers paying to advertise on Apple devices with perfect accuracy given the data Apple has on all of us.
I think you're misunderstanding what this is. They only use it to target ads in their store, they still need to actually sell you stuff or they get nothing. You may be thinking of what Microsoft does, getting paid to put ads in their products like Windows, but Apple isn't doing that. If they do, I'll worry about it then.
