For discussion purposes;
Why would I want to use BTC or any other alt currency?
Where is the market?
The problem with BTC is its main feature of decentralization. You think a digital coin wallet on a consumer computer is actually safe? This what you are up against.
Why use it for business?
No one who has above the table money will put $100,000+ into their coin wallet
I think of digital coins' mass market use as play money for the internet -- like porn purchases -- that is a niche that makes sense to me -- but it would need mass penetration of the market to work well.
If the credit card associations make like difficult for adult or other high-risk businesses ironically they will seed the demand and mass market
