The title is misleading. He didn’t pay taxes, illegally used his business accounts for personal expenses, and ignored a fine for making the devices. (By writing new software for existing parts.)
Can you imagine if google, who to date must have done say $2tr in sales (guesstimate), got a $400bn slap-on-the-wrist?
However, the $10m is revenue, not profit, so between the $2m plus the $6m he likely won't come out ahead.