“i prefer iPhone/Mac/Apple because everything is integrated”
It it hard to argue, because it is true. But again, this convenience is at a cost. You give all your data to one provider. Is it safe? Let’s imagine you have some assets you want to invest. It is wise to diverse your investment into many directions. Even if you loose 3 out of 4 investments, you will probably make profit out of the 4th one. That is a simple risk management, you are aware of the possibility of loss but you accept it. I think one may try this approach in privacy also. If you give your data to many providers it is much less risky, even if one provider decides to do something nasty, you will compromise your data only at one field. It is more convenient to have one provider that serves everything but it is also less secure for us as a customers - also in terms of maintaining market competitiveness.