Re: Phone cameras
Setting up the construction line to produce without fitting the camera costs money. Setting it up to produce different case variants costs money. Getting the "imbecile programmers" to write code that checks if the camera is there costs money. Making sure your £2/hr workers put the right cases on the right phones and in the right boxes costs money. Maintaining two versions of the phone and marketing them costs money. etc.
If you don't want a camera, put a piece of duct tape inside your case covering it.