you are talking off topic. Look at Amazon's historical share price development. Your feelings/emotions/hunches whether the market is in a bubble or not are completely irrelevant to Amazon's business model and operations. Let's not get sidetracked, this is about one of the most successful and steadfast entrepreneurs in the entire American history looking to expand into a new segment after he turned the company from an unprofitable one and one most people never believed in to one of the largest corporations in America. A guy with low profile, who never showed off, never talked BS, never engaged in accounting shenanigans, never sold out, never bullied the government, never played cities or states against each other.
any bubble is success till it pops