'Docking' the long tail, a product-cull too far?

Given that the UK’s largest retailers appear to differ re the need to cull 30% of Tesco’s range (Sainsbury: “…customers tell us they can buy things in our shops that they can’t buy elsewhere.” vs. Tesco: “…20% of SKU's in an Extra store are only selling 1 pack per store per week”.), and as Dave Lewis is the one currently wielding the docking-knife, it is perhaps more important for NAMs to anticipate a 30% reduction in SKUs and plan accordingly…

• The issue for suppliers is where the end of the long tail starts…
• Combining this idea with the 80/20 rule, suppose 18,000 of Tesco’s 90,000 SKUs account for 80% of their in-store turnover, then 30,000 SKU de-lists may not be sufficient...

Action: At the very least, major retailers should check at what point in the tail, weekly off-take does not justify the space allocated…

• …and given that the cost of retail space online is irrelevant, the remaining SKU’s could be added to the online portfolio, or de-listed…Perhaps a final compromise for de-listed NAMs?

Finally, if Tesco manage to gain a competitive edge via product-culling, how long before others follow, or sacrifice share?

(BTW, NAMs that have enjoyed a less sheltered childhood will be aware that docking a working dog’s tail was a fairly common practice in the old days, the actual method being the only ‘bone of contention’, whilst adding a whole new meaning to ‘cross-docking’….)