we have hit diminishing returns when it comes to a lot of technologies
But that goes for each technology in it's own time. Take the wheel: we have it since like foroever. It does not evolve anymore, it's a solved problem. Take the combustion engine, and we have it for 120 years or so. Take batteries. We have them for 160 years, and we thought they were a solved problem, but currently they make new jumps, and still ongoing, while smartphones are nearly solved. It is utter bullshit to say "technology in general" has started in this or that year and will slow down in XY.
Therefore I say it's his personal feelings that are having this certain cycle.
How can you work in the surveillance business with the name "Langley"?
/SCNR