And leave money on the table?
If it were my blog, I would have included a link to "Pay me to show you what I would have done differently", or some other equally organic and not-too-weasely way of selling exactly that service: Reporting on best and worst examples is one thing, relatively LHF, but working with a company to improve is something they should be rewarded for!
Not to mention that doing so may require a company to completely overhaul sales and marketing. Or culture. Or both.
LHF: Low hanging fruit, easily obtainable item.
EDIT: PCCAMPBELL was replying at the same time as me. I like their reply.