The games industry is shit, Hollywood is shit, so learn Blender, game engines and make your own shit
You'll have more fun making your own stuff and knowing it will at least be even half-decent compared to the absolute crap the industry is churning out these days will keep up the motivation. Rather than constantly getting your hopes up and setting yourself up for disappointment and expecting somebody to rescue you.
Just demand that it become public domain on your death. I know you want to give your children a head start, but if the work is profitable your savings should be enough for them. At the very least, limit it's exploitation to one generation. See: Based Christopher Tolkien vs. the sellout Tolkien family.