I don't think it's realistic for a company of Amazon's scale to accept Bitcoin at this point.
and why exactly is that not realistic
Because of a thing called "liquidity." No payment processor can guarantee liquidity for Amazon. So unless you are suggesting that Amazon is going to simply "hodl" the vast majority of BTC received, it's not realistic.
And if they did, they would need to hedge most or all of the fiat value -- meaning the more that bitcoiners "support" Amazon by spending BTC there, the more immediate downward pressure there is on the price. Spending BTC in this context is equal to selling it.
you think Amazon will sign up on bitstamp or poloniex or coinbase to sell the coins each day
because price is determined on those exchanges not the way merchants receive the money. and you seem to not know about how BitPay works by automatically converting bitcoin back to fiat.
also you seem to forget that for every buy there is a sell. someone buys bitcoin to spend so the merchant sell. there will be a balance.
You don't know what "converting bitcoin to fiat" means? That equates to selling pressure by definition (i.e. downward pressure on the price).
I didn't forget that for every buy there is a sell. The point is that,
all else equal, merchants accepting bitcoins for payment represents supply, not demand. If you want to have a discussion about why demand for bitcoins is too strong for that to matter because x/y/z, that's a different discussion.
If people really want the price to go up, they should preach hoarding, not spending.
price will go up with more adoption, more adoption happens with more people coming in, more people should be coming in to use bitcoin as a currency not just bag hold it to dump for more profit, and that will only happen with more merchants accepting bitcoin, and they will only accept it if people are spending bitcoin.
growth doesn't just happen on its own. there is a limit to how many speculators invest and how much price can go up because of them.
We don't need merchants "accepting" bitcoin only to immediately dump it. What we need are users who
use the currency, removed from fiat conversion. We need users who want to buy bitcoins for reasons other than to spend them at merchants who just want dollars.
I'm not saying that Bitcoin doesn't have use as a currency. I'm saying that merchant acceptance at this stage should not be a priority -- not when merchants aren't interested in holding BTC and actually participating in the economy.
Bitcoin = censorship-resistant, trustless money. And digital gold. Not just another payment rail for merchants to add alongside Visa and Mastercard.