By "commercial" I thought you meant professional snow removal by companies that plow driveways or rake off roofs. Where my Wife works they've had some 'professionals' problems. A couple years ago one of the company vans got hit -- judging by the damage it was a plow but no one ever admitted it. Last year they fired the plow driver after he took out an employee's car, as in totaled it, while backing up. Then this year the new snowplow driver backed into the building hard enough to bust the bricks and topple stuff inside the building. Stuff happens.
IMHO, and with all due respect to the good ones, plow drivers and school bus drivers have the worst reputation in my mind. Just because you've got a plow on the front or kids in back does not give anyone the right to drive over other vehicles. In a neighboring town I met a humbled plow driver who'd lost control on a curve (30 mile zone if the road was clear), crossed the oncoming lane (fortunately at 4AM there was no oncoming traffic) and went off the road into a ditch. Ice is ice, even if you've got a dozen tons of dirt on board. Throwing the salt/dirt behind him isn't doing a thing for the road he's on. I'd bet dollars to doughnuts if he'd hit somebody the motorist would have gotten blamed and the reporter on the scene would lecture the viewers about being careful around snow plows. As it was another plow was trying to yank him out with a chain, but this was a 10-wheeler and I doubt got out of there without a hook. I didn't stay to watch.