How would you consider bitcoin as a physical valuable item like gold? there are in main markets of every country some merchants that just by saying a few words people trust millions of dollars to them and that's how the things are done in grand scale.
And your questions are confusing you jump from speaking about consumer credit and then wtf is about drug dealers?
The analogy is that since credit is currently extremely cheap for banks so they can hand out credit cards that are even unsolicited - the same way operate drug dealer - first shot is free - once you're hooked, well
