We've reach a point of price stabilization and longevity for smartphones now that didn't exist for the first 10 year ramp. When every new model added fundamental capability, you always want to upgrade, with the sweet spot often being every other year. But now, with better build quality, batteries, and stabilization of features people will keep their phones for much longer. Or buy "new" models that are of older versions since the price/features have been acceptable to run most of the apps they care about for years now. Plenty of people still want the top end for similar reasons to why people buy design clothing, but we've reached a feature plateau. We hopefully are getting close to that with EVs. Seems like around 300 mile range standard was the key thing. Though improved AI driving could change that again.

The main issue with smartphones is software support, as it essentially acts like a built-in time bomb.

Buying an older-generation flagship model to get better features than a current-generation midrange model of the same market price isn't very attractive when it'll have to be replaced after 2 years instead of 5 years.