If bitcoin is accepted directly by Amazon the market capital of bitcoin will surely peak in a short. Because more corporate firms will start to invest into bitcoin. Along with this the awareness about bitcoin and other altcoins too will increase among the users in large scale.
Yes I agree, but do you think bitcoin is ready at this point? I don't think it is yet. Transactions are sometimes too slow (even with reasonable fees) and the bitcoin network doesn't support a huge number of transactions per second right now.
I agree. With the high transaction fee's incurred when using bitcoin as mode of payment, buyers might get frustrated that will force Amazon not to accept bitcoin for now. Bitcoin is really tied up with the scaling issue that will make people not to used it. I hope the issue can be resolved soon.