American and Chinese companies have been immensely interested in drone-based deliveries these past couple of years, which makes sense considering how those two countries have the largest e-commerce markets in the world, but it looks like the Chinese companies have just been dealt a major blow. While American companies have been working closely with regulators to find a happy middle ground between safety and convenience, Chinese regulators have decided to completely ban drone-based deliveries in urban areas, which is where such deliveries would be the most-useful.