Not sure if you caught the interview but John Carmack recently said he'd still love to re-visit it, but he held firm to his "10 years, that's it" plan. He said

Not sure if you caught the interview but John Carmack recently said he'd still love to re-visit it, but he held firm to his "10 years, that's it" plan. He said it was "binary" - didn't make it, close it down. If you did catch that, then sorry for being redunant!