Specifically in investment banking, this is quite common. But most people don’t work like this till 60. They retire at 38-40 and open a loss making coffee shop for their wife and live happily. The babu solution to this is put regulations, the actual solution is more businesses where labour can move to. If the industry is profitable but labour is being over worked, there will always be an entrepreneur who will take a cut on his profit and deliver better work conditions. Free markets for capital and labour work wonders.