When Amazon will accept bitcoin we will se a BIG spike in price, this will be the real beginning.
How do you know? We've had quite a few big merchants accepting bitcoin this year and the price didn't budge. In fact, it went down. I hope you're right about amazon though.
It probably depends on if people actually uses bitcoin on amazon and how amazon treats the bitcoins after them get them.
It's still a pain if you want to buy bitcoins, so Amazon is unlikely to accept bitcoin until that's resolved.
This is how I see it play out.
awareness -> regulation adoption -> banking adoption -> public adoption -> amazon adoption