Earlier quoted context omitted.
Why so few prosecuted in Britain? Wouldn't this be a good opportunity to get some assholes who thought they could shift the tax burden to others? Six month prison sentences sounds reasonable. British prisons suck, but given that this is partly the dodgers fault that's just poetic.
What would be the value in it? Justice? What does that mean? Punishment? Or to send a warning? Would that really be effective? What would be the cost? Was there anybody in the pot that was expendable, economically?
Yes. A lot of tax evaders who wouldn't even blink at a potential $500k fine would not take any risks if the were faced with real jail time. That means more tax revenue.