It's a different kind of lock in. Phone lock in is real because the apps I bought on e.g. IOS don't transfer anywhere else. In the case of e.g. frequent flyer

It's a different kind of lock in. Phone lock in is real because the apps I bought on e.g. IOS don't transfer anywhere else. In the case of e.g. frequent flyer miles, that's something they just give me for "free" as part of using their service. That makes the next purchase potentially cheaper so I'll tend to shop with them again. But I could just walk away (and have, in the case of airlines) if I feel the need since this was essentially a gift to me in any case.