Yep, and the phones will take a very long time to close many of these gaps.

Especially when it comes to mechanics and not only electronics. But size gets smaller all the time, in the camera field, included. And the mirrorless class of cams already do quite well compared to DSLR... and they weigh about 0.2 kg. But it's also about policy and market conditions. Some space level technologies are not worth it implementing in consumer goods as smartphones yet, while they're still too expensive. And some have been there since the beginning, of course.