If I want to do Dynamicland at home, I don't need the software. I need to understand what it means for computation to be a property of an object, like color or temperature. That's a radical new idea. If I understand that idea, I can find my own way to make that happen with stuff I've already got.
But if they give me software to run, I've got to figure out how to run C code on my Mac, and buy the right kind of projector, figure out how they do calibration, figure out how they persist state…