My guess is that point and click adventures are not very profitable. There are no in game trinkets to sell, they don't fit a subscription model. I guess you can

My guess is that point and click adventures are not very profitable. There are no in game trinkets to sell, they don't fit a subscription model. I guess you can slowly release "chapters" and sell them independently and some developers do it these days but the user churn should be high as there is almost no desire to replay once you complete a chapter.