The hosting company comparison doesn't fit, you can publish a myriad of content and quickly to a host, checking all of it, against laws for explicit content and copyright alone would be a mammoth task. Banks only offer financial services they themselves choose to provide. In essence they only provide FTP and the only file you can FTP is a number (to put it simply).
Banks need regulating (is there anyone alive in this day and age who doubts this?), not just on an international level, but locally and for the 'little man' too. My own experience this last year involved making a formal complaint to the consumer financial complaints body where I live about an error made by the bank, freely admitted to by the bank, and the result was "suck it up", including the financial cost. Banking is in a poor state, having lost the faith of the public.