I’ve got wild guesses and speculation, but from a stand point of having previously worked at a store that sold the Phantom 3, the Parot Bepob, Mambo, and AR2, as well as a few off brand replicas, but DJI has the market locked for entry level high end drones.
DJI can’t be beat in terms of out of the box reliability and usage. And it shows. How many companies are currently making a out of the box, RTF drones that can be bought at super stores? And at the price point they offer? There are other companies, but i’d see them returned all the time, people often citing disappointment of performance vs the cost they paid.
The other thing I’d hear customers complain about was customer service from the companies. I’ve personally dealt with both GoPro and DJI over issues with stuff I’ve purchased from them direct, and GoPro was horrendous, trying to blame me for stuff being cracked out of the box, as well as being used despite purchasing as new. DJI offered me multiple, easy to understand guides to try to fix it before finally offering to have it shipped in for repair or replacement.
As for the Yuneec being the only other contendor, i’m dubious, but hopeful. Yuneec may have Intel’s backing, but that dont mean anything unless they can create a contendor, and the closest they have is the Typhoon 4K and the Breeze 4K.
I think the only thing that can give DJI a fight is a modular system. Choose a frame, choose a flight core, choose your battery back, choose your motor/arm combo and click them all together, assembly is less than a minute. It’ll be easier for your average person to get into drones, and if done right, even allow other companies to make their own modules. It’ll require co-operation between companies and a standardization of sizes and ratings, which i doubt will happen.