> Well Tesla does it and their customers love waiting hours for software updates (I'm not being sarcastic, this is literally what we found through benchmarking)

I've done several OTAs on a Tesla. Most were about 1 month apart, and my longest update took 28 minutes. The average is closer to 15.

> Tesla can do it because they are sinking money and only have a few hundred thousand cars.

I won't get into whether they are sinking money, but they have about 1.6 million cars.