[snlacks]

What's the issue? There's two that are unavoidable.

The maximum speed of moving data from one physical place to another, moving data from the hard drive to the motherboard and the ram to the cpu/cache is faster than from the internet to a computer. To he speed of light is still noticably slow when you're making round trips to get data.

The other issue is configuration, even if automated, software needs to make decisions about how to deal with different hardware and system differences. This takes time to bootstrap after initial load increase time to usuability or it can be done on the fly slowing down the interactions.