I quite enjoyed reading it, however the book was more superficial than I would have liked. The American nationalism and capitalist ideals are never questioned. Issues such as the risk of life for astronauts are adressed, but always in a sort of roundabout way. This is essentially a book about some big, rich and crazy men chasing their very expensive boyhood dreams of colonising the cosmos. Which , yes, is fun to read about. I especially enjoyed the descriptions of launches and crazy parties. But I would've liked some more food for thought.
Also, at times the book got a bit repetitive. I got tired of the whole "NASA/the government let us down so now we need to rely on the Russians, the horror"narrative after two chapters, and the hare and tortoise comparison was clear the first time Davenport introduced it, it did not have to be repeated twenty times after that.

"Their [Musk's and Bezos'] race to the stars was driven not by war or politics; rather, by money and ego and adventure" this sentence sums up the conclusion of the book. The question I am left with, is if money, ego and adventure are better foundations to build a space age on than war and politics.