Consumers no longer need to upgrade every year. There's nothing the iPhone X can do that iPhone 7 can't.
Low light, telephoto, portrait lighting, animoji and true hands free secure use would like a word with you.
Don't get me wrong, the iPhone 7 is great, and I might not have an X if I didn't need to pass my 7 down to my extended family, but don't think the X has nothing to offer over the 7.