DJI has been building the best drones for many years now.
I'm sure if we keep going there's hundreds of examples like this.
As an example, I had a heatbed issue with an early X1C. I went back and forth with the Bambu support folks a few times, busting out a multimeter and thermal probe. They had no trouble interpreting the information, and sent me a replacement part, under warranty, ASAP. Can you imagine any company stateside that would engage in actual troubleshooting nowadays? At best it's going to be some poor guy stuck reading through a script they can't change, and aren't empowered to resolve anyway. Maddening.
It was the first I’m aware of that learns your preferences from purely passive interaction (i.e. not liking and subscribing, not following topics, not relying on a social graph).
I put magic in quotes because if you read their paper it’s nothing too crazy but (ignoring the addictive quality) it still feels pretty cool.