>>11517272most likely never
I have found taht people confuse technological advancement as a continuous state independent of physics or knowledge.
They say things like "in the past everyone said that flight was impossible but now we have flight! In the past no one thought that computers will be an appliance but now everyone has one! if you think we'll stop advancing you're no different from the luddites of those times!".
This is a fallacy, though, because we never dealt with limits of physics when it came to past technologies. We already know birds could fly, so flight was possible. We already had ideas of computation, so computation was already known to be possible. We've hit a point now, though, where future technologies largely rely on physics that we DON'T know are possible. It is a fallacy to think technology continues to grow exponentially or even linearly.
Most likely, it was an S curve and we're already hitting the final plateau.