Does this case prevail or the majority of cyber-crimes are still unpunished?
The far majority of the hacks and similar acts of fraud remain unpunished, and it will stay like that for ever. It's always the smaller fishes that end up like this, which is a good thing of course, but doesn't solve much.
The big boys with their hacks involving many millions remain free and unharmed and for that reason can keep doing what they are doing unfortunately. The smartest remain free, that's the whole point.
If you somehow end up like the hacker this article is pointing at, you made a mistake and got busted because of your own incompetence. Just look at all the exchanges that got hacked, nothing has ever been solved.
Not even inside theft has been subject to discussion with how there wasn't any trail left behind.