Not to quibble, but in my two decades of enterprise billing and payment system experience, I found that reasonable data security practices prevented loss of customer funds. I believe a public trial of cooperative Bitcoin will demonstrate its resistance to hacking - or not.
Sure - you are asking for *trust* so I am just making sure that people are aware of that (if they want to trust your system then that is up to them).
I could mention about my own years of experience (in financial and other fields) but I think it is irrelevant to the discussion.