Full-funnel campaigns also take into consideration how the marketing funnel has morphed over the years. The old school of thought had a top, middle, and bottom part of a funnel, where customers went in at the top and left it after making a purchase. The funnel has evolved into a customer lifecycle that includes those pre- and post-purchase phases mentioned earlier.
That isn’t to say that sales-y promotions couldn’t ever create results—as marketing “gurus” have proved. The results just aren’t as good as they could be. Take the biggest gurus’ results—the ones they boast about—and calculate their conversion rates. Often their marketing is comparatively ineffective. They just have massive volume, so the sales numbers are impressive.