In general, I'm not convinced in long sentences, I don't believe they deter crime nor do I believe they help criminals become productive members of society especially given the current state of prisons in most countries.
I think that locking up people for decades should only be considered when there's a very real risk of major crime (murder, sexual assault, etc.. ) if the criminal is released.
So the sympathy on my part is not only for white collar criminals, it's for the imprisoned.