I think you're mixing up some things. I couldn't just buy an ARM chip and plug it in a desktop PC or laptop and plus, the ARM chips, big-little or not, we're terribly underpowered 10 years ago compared even to Intel Celeron.
So calling it 10 year lagging because of a feature that had no relevance in the PC space back then is a misrepresentation.
Big-little made it to the PC market now since modern CPU cores are powerful enough that even low performance ones can still run a desktop environment and browsers well enough without stutters. That was not always the case 10 year ago, so consumer demand was always optimized around maximizing raw performance.
So, the fact that ARM had this feature 10 years ago is larglely irrelevant for this argument
It's ARM's performance improvement at the top end in the last 10 years that changed the landscape for the PC industry to a degree, not big-little.
So calling it 10 year lagging because of a feature that had no relevance in the PC space back then is a misrepresentation.
Big-little made it to the PC market now since modern CPU cores are powerful enough that even low performance ones can still run a desktop environment and browsers well enough without stutters. That was not always the case 10 year ago, so consumer demand was always optimized around maximizing raw performance.
So, the fact that ARM had this feature 10 years ago is larglely irrelevant for this argument
It's ARM's performance improvement at the top end in the last 10 years that changed the landscape for the PC industry to a degree, not big-little.