Solve that problem, and you'll be a wealthy individual!
"Corked" means the chemical compound trichloroanisol (TCA) has "contaminated" the beverage. TCA usually comes from the cork, and it is generally accepted that a) TCA occurs naturally in cork trees, probably a result of a fungal infection, b) it can be introduced during sanitation of corks as an unintentional byproduct of bleaching, or c) it can result from bacterial infections on non-sterilized surfaces. TCA has a low threshold of detection--doesn't take much for humans to smell/taste it. You now, like how we can smell a dead skunk 10 miles away.
It's really big business in the wine industry. The big boys pay upwards of $2 per cork to test for TCA and ensure it is a non-issue for their $100 bottle. Many have explored composite corks, twist off caps or glass "corks" to avoid potential TCA. The pomp and circumstance of natural cork (and some argue the unique ability of natural cork to allow slow diffusion of oxygen, though there are conflicting studies out there on cork vs other enclosures) keeps corks relevant. What trust fund baby/hedge fund manager would drop a grand for a screw capped Harlan after all?