I think there is too much attention to the sensor size, hence I labelled the Skydio a "flying action cam" as opposed to the DJI line being more on the "general purpose" side. Not all "pilots" are interested in supreme video quality, not everyone is even wasting terabytes of 4k+ footage, when 1080p is more than enough, not everyone is even doing post-processing but rather performing simple smartphone compositions, not even using the onboard SD (in such case, for instance, the 4k footage is unusable).
DJI will have to position themselves carefully: either serve only a niche pro market (which apart from the buggy software they are doing pretty well) or delve into consumer level with the right approach, otherwise there will be someone else (preferably not Chinese, and Skydio ticks the box on that note) doing the right thing in their own segment.
Ah that's disruptive innovation btw, bringing a cheaper product which focuses only on what the vast majority of customer need, disregard whistles and bells that are only for engineers and die-hard aficionados. Much like drones were distruptive to aerial photography, when people were using (ultralight) aircrafts for that. Now even kids can do it blindfold
In the end what most people want is a flying camera that doesn't require much attention, doesn't crash and doesn't draw the attention of authorities because of "pilot errors". Skydio seemingly nailed it. Then they can simply catch up with all the whistles and bells geeks love, such as sensors size, zoom, etc.
I think the sensor size matters if the real-time computer is bad but it has so much packed tech that w/ better technology, smaller sensors can produce better imaging than bigger sensors w/ less technology.
The Smartphone lenses stay the same size I think but the quality goes up on every next generation?