[actually_a_dog]

> The share price should reflect future earnings.

In particular, the market cap of a company should theoretically be equal to the net present value of all future and current cash flows. Therefore, (again, theoretically), if AMZN is priced correctly, the answer should be that you will break even, eventually.

Seen in this light, the company's job is to ensure that its stock is not priced correctly -- that you should actually be able to make a profit by buying AMZN (even the entire company) today.

[axiosgunnar]

When is eventually? In infinity years?

[Retric]

Every time a company like Enron fails with positive stock value that theory is demonstrated to be objectively false.

As we know that theory is wrong we should discard it, which then opens the question back up. Anyway, expectations of future earnings are far from the only way stocks are valued. If you can predict a short squeeze for example you expect a jump in price independent of fundamentals.