Dyson's "technology" was innovative in a sense that he took technology from the professional world and adopted it into the consumer world. For example, his cyclonic vacuum cleaner technology was adopted from cyclonic filters in the sawdust industry and large exhaust systems. That he should get some credit. But he was also selfish, and wanted to monopolize the technology indefinitely, hence his obsession about protecting his IP. As a result, he had clung on for too long on his existing technology, and didn't innovate that much since his cyclonic vacuum cleaner and air multiplier. His cyclonic vacuum technology is no longer exclusive, and his air multiplier technology didn't evolve much since. So he tried to push his products to the premium market. He had failed to capture the mass market despite being a pioneer during his time. Had he done so, his company would have become a proper household brand.
Chinese companies have also adopted technologies from the professional world to the consumer world. For example, brushless DC motors, and consumer drones. But unlike Dyson, they had also successfully captured the mass market. While they had also applied for IPs, they were also not overly obsessed about protecting and monopolizing their technology. If someone from the West copies DJI technology, its not like DJI is gonna win lawsuits in Western courts. So its just better overall to focus on mass selling the current technology, while also innovating to stay ahead of the competition.