I don't agree. Kickstarter showed that there's plenty of people who'd pay for old school games. Not just adventure games, old school games! Broken Age, Spaceventure, Pillars of Eternity, Thimbleweed Park, Mighty No. 9, Shadowrun Returns, Wasteland 2, Broken Sword, Armikrog and many more. Old school games. People wanted those games to happen and voted with their cash. And some games were good, some bad, some never came out, but that doesn't change the fact people wanted those. Adventure games are still being made and people still love them. So there's a market.
And sure, big games make big bucks. But by that logic Activision should just release a new Call of Duty every six months.
They could have made a good King's Quest game. And could have made some good cash. But they just had an IP they didn't care about and dropped it on some hipsters with almost no experience in game development.
And that's a crime because the Sierra classics really deserve better.