I have found that red wines clear naturally within a matter of days if moved to somewhere very cool, but white wines often need fining and even filtering. Finings which include gelatine strip out tannin, which can make a harsh young wine more drinkable, but compromise it's chances of improving in the long term. Much depends on the ingredients and the conditions of production.
In commercial production, all these sanitising processes are ritually applied for export into the mass market, the local peasants employed may be given free, sub standard muck, (which I have sampled), while the producers keep special reserve stock which never hits the open market, unless there is an exceptional vintage, in which the stuff is held back and then sold for astronomical prices.