A general purpose computer would be hard to use if it had an OOM killer instead of swap and if running the CPU full speed shut it off because it got too hot inside. (Using it too hard can also drain the battery even if it's on a full strength charger.)
This is straight up lala-land. Phones do banking, browsing, document writing, printing, video editing. Many people don't even have a computer.
> OOM killer instead of swap
Windows 10 apps work like that.
> Running the CPU full speed shut it off because it got too hot inside.
Happens to some crappy laptops. These are basically irrelevant details.
And remember, they don't do Flash ;)
It's web pages that changed to fit on phones, more than the other way round.
Don't most modern (>2010) CPU's thermal throttle until they are back within operating temps? You'd have to stuff a laptop inside a backpack while maxing it to get it to overheat to the point of resetting
phones are actually more general-purpose since they travel with you and know where you are.