pure speculation on my part....
the fact that he said it would be worth 100k doesn't really mean they will be selling it for that much at any point in the future so thats a little arbitrary but selling it as a 20k or 30k option on the higher end models is not out of the question (assuming its fully flushed out and works well lol). it seems unlikely they would add it to cars that dont currently have their most advanced features, so even when this happend you wouldn't see an FSD Trax on the road lol, but an escalade? perhaps.
and to the point of the other auto manufactures using tesla's tech, thats a no brainer, i'm not really aware of any software feature that was created by any auto manufacturer, they pretty much always license software from 3rd parties, sometimes exclusively but still.