It's never going to end. To the home owner or company, they don't know the difference. At long as it works to them, it doesn't matter.

As for the contractor, as long as they make maximum profit with cutting corners enough so that nothing happens within the next 6-12 months is what they aim for, in my honest opinion.

There's only a handful of electricians and contractors that actually rather make a decent profit, but the work is done right, the first time, to last for years to come.