Because Iceland is too small, it's something you would almost never be able to do for a simple reason. For example, as a banker, you can take the worst decision for your bank, costing to it multiple millions, you are not really considered as the culprit, but the bank is, you represent and act in the name of the bank and not yourself. In another side, the bank is considered endorsing everything you do
I'm not 100% certain on iceland imprisoning bankers post 2008 economic crisis.
There are some who attempt to downplay the issue claiming if bankers in iceland did what they did in any other country they would have been imprisoned. Based on recent precedents that appears unlikely. Banks like HSBC have routinely laundered money for terrorists and drug cartels over the past 15+ years without anyone being prosecuted or imprisoned.
Has anyone heard the urban myth that iceland has a "shortage of men" and is offering migrants free money or land to travel there? That could be a myth started by bankers as a form of revenge on iceland for daring to crackdown on their schemes in that country and refusing to bow as other nations typically do. It could also imply that iceland's imprisoning of bankers for their crimes is something exceptional in this day and age.
But to be honest, I'm not 100% certain one way or another.
Yeah, I do remember about the news claiming Iceland will give free money to anyone who immigrates there and marry a lady, (due to the lack of males?). I don't know if it was true, on top of that it was not just a few bucks but a good bag of cash. I can go there for free if they want, I will be also happy to take care of more than one wife, I can turn into polygamy
HSBC is the perfect example to give an overview of what banks are doing, sadly it's not the only one. Take a look at the Panama papers drama.
I just searched about "bankers in prison" and found articles reporting Spain and Ireland and France jailed crooked bankers for embezzlement, back in 2016-2017. Look like a justice is still possible, unfortunately, a massive
purge would be necessary
Back to the graphic posted by @OP, I am surpised with some countries, especially Bahrain, Denmark, Germany,