I'm not an expert on the market or anything, so just my two cents.
But for a while, GoPro had fairly explosive growth, in my perspective anyway. But after some time they stopped really innovating and some other brands with cheaper products but similar quality began getting some traction. So GoPro kind of dropped the ball. I think they've been getting better again the past year though.
But again, not a market expert; this is just what I can remember seeing and reading about.
I would see DJI and GoPro two completely different kind of company. DJI founders are technologists, they are technology first company. I don't see how they can stop innovating.
But for a while, GoPro had fairly explosive growth, in my perspective anyway. But after some time they stopped really innovating and some other brands with cheaper products but similar quality began getting some traction. So GoPro kind of dropped the ball. I think they've been getting better again the past year though.
But again, not a market expert; this is just what I can remember seeing and reading about.