[jasonisalive]

The problem of credit cards is that when you make a payment, you have to give away your private key. No amount of securitisation will take away this fundamental flaw.

This is one of Bitcoin's evolutionary advantages in this space. To send money with Bitcoin, there is no need to expose one's private key. A massive corporation could take millions of annual payments and their paying customers needn't be concerned about their money being at risk. If the entity has poor security, the only people they endanger are themselves.