Well you are targeting a new industry. Their operating income was high in 2013,around $40 Billion and that of amazon was only around $700M that's not the important thing.
The important thing is the customer base. People who use amazon should already be somewhat familar with basic computer knowledge and online payments. On the other hand you might find an old 'trucker'
(no offence, just example) seeing the 'Bitcoin accepted here' sign on an Exxon gas station and he would probably be like
and just drive away.
Don't get me wrong, it would be great if they accepted it too.
Well the thing about gas stations accepting bitcoin is that they make very small margins from selling gas, almost all of their gas sales are from credit cards, and credit card fees are a big expense for them. If a gas station were to accept BTC they could accept a 0/unconfirmed TX as long as the TX fee is at least, say .0005 to give it a good chance of being confirmed quickly, making it all that more difficult to execute a double spend attack. Gas stations could easily see their profits double by accepting bitcoin (if not more) as their margins are usually around 1% but credit card fees are well in excess of that.
