As a manufacturer, yes. But as a distributor/retailer? Highly unlikely, except perhaps for very expensive niche products (and, yes, you might wish to classify steelbooks as an expensive niche product, but I was thinking more of very expensive jewellery, cars etc. in the 7 figure sum bracket, not something sold at £15-£35!).
Would you expect your local supermarket to spot check all 10,000 or so lines they sell every day? What you are suggesting would be totally impractical for a retailer that makes its money through shifting as much as it can (likely at very narrow margins, too, despite what we might think about Zavvi's pricing of steelbooks at times). To do that would add significant costs to their operation and therefore the end price charged to the consumer - but perhaps you would accept that knowing you would get a perfect product every time rather than the occasional defective one?
Believe me, I am one of the first to complain when I receive a defective product or bad service, and on more than one occasion (at least 3 come to mind straight away) I have had callbacks from a CEO or someone else very senior in an organisation to resolve a complaint I have raised. And one of those was when they were blaming their supplier which I said I didn't care about as I had bought the product from them.
And, no, I am not happy about receiving a scratched steelbook on this occasion either. But I have raised my complaint, they have clearly received many and so are looking in to it. So I wouldn't be surprised if their is a major reprint and replacement programme (and why would they be sent unsealed, btw? Has that happened before? I honestly don't know as it's never happened to me before).