Or you copy copyrighted or patented works into your knowledge-worker output, creating liabilities for your employer which can destroy it.

Or if you generalized cheating from "copying answers" to "producing answers that look right to your employers", you get a whole range of dishonest behavior you can get away with for years (careers?) while causing serious harm to individuals, companies and communities. Using unsafe materials which superficially pass inspection, outright faking studies so that it looks like your drugs work, fingering a likely suspect in a criminal investigation and lying on the stand to get them convicted.

I'm not a fan of slippery slope arguments, but there is sometimes a logical appeal.