I agree that not all computation would move back to centralized data centres, but then not all computation is done in the cloud now (vs on your mobile phone). 2

I agree that not all computation would move back to centralized data centres, but then not all computation is done in the cloud now (vs on your mobile phone). 20 years ago, people would have thought it was insane to send data packets over the internet to edit a document, or any number of other tasks now serviced by SaaS products. Of course there are still some tasks that are better done locally, notably real-time or life-critical tasks. And these SaaS services only became feasible when the connection reliability and speed allowed them to. All I'm suggesting is that future improvements to connection reliability and speed will give way to another round of SaaS products, perhaps then able to service real-time needs but still not preferred for life-critical tasks. As much as I hate to say it, the first example that comes to mind is surveillance/tracking. If you think very long-term, like say data-transfer-via-quantum-entanglement, then you could imagine data transfer being insignificant compared to compute time for real-time requirements, so you will naturally offload the compute to the biggest most powerful computer you can get your hands on.