StarCraft is the exception that proves the rule, and Blizzard did actually release an official no-CD patch. Other than that, what games, and what company would they impact? E.g. my friends still play Total Annihilation, but the company that published it went bankrupt years ago; Gas Powered Games might theoretically be affected by their reputation but they probably don't have the rights to release a patch for Total Annihilation even if they wanted to.