How can the financial sector regain public trust?

How much do you trust your bank? After subprime, Libor, intentionally mis-selling products, 'dark pool' activities – all in the past ten years – this is perhaps a silly question. 
Of course, this is not a challenge solely experienced by brands in the financial sector. Society as a whole has been steadily losing trust in big business – as well as government, media and even NGOs – but 2017 was the first time in 17 years that public trust declined across all f