Food for thought, indeed, Tanya. One necessary constraint in industry of professional fee chargers, such as my industry of insolvency practice, for example, there is strong regulation by statute and regular inspection by the regulators. Theoretically, it should be much harder for there to be rogue lawyers or accountants, but the truth is, there are those who will always find loopholes and ways to circumvent rules that appear to frustrate the firm or individual from making as large a profit as they technically could, were those regulations not to exist, especially where they are in control of large volumes of client's monies, many of whom are bankrupts, insolvent companies, convicted criminals (Proceeds of Crime Act POCA) and disqualified directors. Taxation avoidance is a prime example in industry in general, and, as it is legal, could be a good example of (a) is it ethical, (b) is is socially responsible?
I can see that there is a good argument (which I don't personally agree with) that the aim if business is to maximise wealth and that moral intervention is an obstruction and a frustration for creatively talented or entreprenuerially driven individuals. "The nanny state", I can hear the cry.
Incidentally, the term "psychopath" is archaic, the correct term is now, "sociopath" and probably describes the so-called one-in-four business leaders better. The main characteristics of sociopaths are not greed, fear and arrogance, but rather a need for instant gratification, a restlessness, shallowness, lack of empathy, insincerity and the only true emotion felt is rage, hence the sociopath's propensity to cause immense pain to society or commit outrageous crimes. Madoff could be an example.
In the context of industry, such individuals armed with their professional qualification or status within the company are likely to have little real empathy with CSR or sustainability, will want results NOW, will be constantly seeking change and will be highly aggressively competitive to those it sees as rivals or who could thwart their ambition for power, wealth and status. They will have no qualms laying off staff and riding roughshod over overs.
The question is, how do we keep them out, given their superficial charm, powers of persuasion, fake sincerity, restlessness and their driven inner need for constant change?

There is a darker side of rules compliance, where individuals may slavishly follow the rules to be safe, without applying judgement or reason (or, as has been apparent in the last decade, find ways, to get around the rules). Just because it is legal doesn’t always make it right or profitable in the long term