Simon Says: Anyone who follows the tech industry knows that history suggests that any sort of "medium", be it floppy in the very distance past, discs, CF/SD, etc. shrinks over time, while the performance of next generation but smaller medium initially doesn't perform as well, will catch up and surpass the standard of yesteryears.(For details on this subject: check out "innovator's dilemma")
Sensor is just another example of a medium for light, and there is no exception.
We are already experiencing this trend from Medium format -> FF -> APS-C -> 3/4 -> ?
Trust me, at some point smaller sensors will be technologically advanced enough to be just as good as bigger ones of the past.
For film it was the smallest format that delivered adequate results that won. I believe we will see the same for digital. If anything, better sensors will make smaller sensors more viable....
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