You can cause a lot of harm by breaking infrastructure. 10 years in prison is a bit extreme for an accident but it obviously has the desired effect. The current penalty in my part of town seems to be $0 and no time behind bars. My fiber optic internet is cut about once every 2-3 months.

I wonder if something in the middle could work. I feel like if you are legally responsible for a construction job and dig into the forbidden spaghetti that a little bit of mandatory community service isn't exactly an extreme response.