The winners of SpaceX's blockbuster IPO—valuing the company at $1.75 trillion—might not just be investors, but also the ones who welded the rockets.

"There's this meme that wives of tech billionaires go on to do NGOs and fund bad causes—SpaceX will be the literal opposite."

SpaceX's IPO could value the company at $1.8 trillion, raise $75 billion, and create 4,000 new millionaires including cafeteria workers with stock options.