I can easily see the future of personal computing being a mobile device with peripherals that use its compute and cloud for anything serious. be that airpods, glasses, watches, or just hooking that device up to a larger screen.
theres not a great reason for an individual to own processing power in a desktop, laptop, phone, and glasses when most are idle while using the others.
The compute power yes, but the OSs and UX are shit.
E.g. android/ios has better security than Windows/GNU Linux/MacOS, much more reliable suspend/wake functionality, much better battery management, etc.
Like it's a 50/50 chance my laptop with Win 11 will wake up fully charged or fully discharged in the morning, and whether it will be kind enough to actually be ready for work, or I can go brew a coffee before it's ready..