I that this has historically been the case, but I think there has been a lot more delivery in recent years. The estimates from Musk seem to be less off, and I

I that this has historically been the case, but I think there has been a lot more delivery in recent years. The estimates from Musk seem to be less off, and I think a massive part of that is that the ramp up to this point was all predicated on original design of parts. They design and build >90% of the parts in the space ships. I think now that they have a catalogue of parts they don't have to build from scratch, their design/development cycles for new products are much faster and predictable. This same thing goes for Tesla, I don't think Musk & co. get enough credit for building everything from scratch.