Future upgrade cycles on phones and laptops, PCs, will be driven by SOCs that embed some type of ASIC that run a specific model. Every 6 months there will be a new, better version to upgrade to, which will require a new device. This is how Apple will be able to reduce cycles from 3 years to 6-12 months.

I think businesses running datacenters are much less likely to frivolously buy the latest GPUs with no functional incentive than general consumers are...