The major third party developer whose sudden loss would be the worst

[VAMatt]

CDPR would be significant as well, considering that they're responsible for one of the best games of this gen, and have probably the most hotly anticipated game slated to come out next year. The Witcher is now a hot property, and expectations for the next TW game will be huge. It would suck if that game, or Cyperpunk (after all this waiting) didn't happen.