Exactly! You actually CAN have 50 people finish something 50x faster, but it takes a shitload of planning, and that equals time and money no company I have ever worked for, or even known of, would allocate to something that isn't generating immediate income.
Take the Hoover Dam for example: Dsigned over 3 ish years and built in 5, at a time when nothing that huge had ever been made before, at less than a billion in today money, and 2 years ahead of schedule. It's 90 years old.
It's funny, the world was excited for basically a teched out Toyota Tundra with shitloads of battery. The designers were ready to build that, and they could have kept literally everything else the same (steer by wire, steel skin, glass, bed cover, etc) and everyone would have been happy.
Even looking weird people were excited for it.
But then they deleted half the range and doubled the price and ::pikachu face:: everyone hates it.
Sure, musk was the reason it looks weird, but I'd be willing to bet he's 100% the reason for those other things too, because they likely had to cut weight and size to make it's weird look physical possible.
(I'd still buy it if it had 500+ range)