Nothing like the original fruits

Mike and Ikes are probably the best after-work snack to have ever existed. And when they're three for a dollar. . . .
Tonight I saw we also had some new lemonade-flavored ones, which were pretty good, but it's got me thinking how the spinoff, the sequel, never matches the original. Mountain Dew has discovered this around two million times now. Note to Pesi: people do not like blue, purple, or "pitch black" pop. (Typically they don't love yellow, either, but you got lucky).
What drives us to one-up ourselves, refusing to acknowledge our inability to outdo the first? Maybe it's capitalism. Money has always been the most effective enticement to get us to crawl out on that limb.
Not that Pepsi or Mike and Ike is going to get any more filthy-rich from the new products. They'll be discontinued, surely, before turning any significant profit, and while they're new, the promo prices will curb gains. So maybe it's boredom.
Alas, the second attempt is never better than the first, but it is cheaper.