So would you say that the value of Apple products increases as you have more of them (higher than just the linear benefit of more products)? I've used them, but always as one offs.

For example, Ive had a Mac(book? The one that you connect periphery to use) as a work computer at a previous software job, the iPhone because of a girl I dated who wouldn't be with a green bubble man, and iPad also in a previous job, so never together or actually adopted in personal life, so I didn't get sold.