So, it's a year from now, and bitcoins are becoming more popular, though still not completely mainstream.

Hello, my name is Amazingon, a hugely popular and successful online retailer. I will start a new p2p currency, called ACoin. ACoin is really just bitcoin, but with a different chain, much better client, encryption, etc. Plus, I will give discounts to my customers who pay in ACoin.

All of a sudden, everyone starts using ACoin. What happens to the bitcoin network then? People would leave it, you would not be able to buy things for bitcoins, and bitcoin value would go down..

If and when bitcoins start becoming more popular, which is what we all want, there is nothing stopping Amazingon from crushing it with their own brand of p2p currency. Thoughts?