That might be a pretty safe assumption for the vast majority of wines made from kits and juice (no skins) but considering most commercial red wines aren't even released until they are two years old, wines made from fresh grapes can vary greatly in how long they take to mature. I had the opportunity this past fall to taste some extremely fine examples of Pinot Noir from Burgundy (the complete DRC line) from the 1996 vintage. The Grands Echezeaux and Echezeaux were drinking beautifully and were likely at their peak, while the Richebourg and La Tache were still many years from hitting prime time. Same vintage, same winery, same grape variety, but very different wines from each vineyard, and some requiring much more time than others.