I'm not going to be crazy enough to say that there will never be anything bigger than the phone, but can you see anything that any company can do in the next five years that is more ubiquitous than the smart phone?

75% of the world's population has a cell phone (https://www.rferl.org/a/report-says-75-percent-of-worlds-pop...). No matter what any consumer electronic company introduces in the next 5-10 years, I doubt that it will have more impact than the consumer smart phone trend the iPhone started.

What company has been innovative in the consumer electronic space in the past decade? No matter what Apple does, I don't realistically see Apple or any other company introducing a consumer electronic product that is as successful (revenue wise) in the next decade.