We are already there, I think. Look at the success of games like the Blackwell games (and other excellent games from Wadjet Eye, such as Gemini Rue and Technoba

We are already there, I think. Look at the success of games like the Blackwell games (and other excellent games from Wadjet Eye, such as Gemini Rue and Technobabylon), the Deponia series, Machinarium, Thimbleweed Park, Life is Strange, Disco Elysium, or the newly released NORCO, which a lot of reviews are calling a masterpiece. We are at a stage where adventure games are relatively cheap to make, and platforms like Steam and the App Store makes it easier to self-publish. It might not be hugely profitable, but that doesn't matter.