Can we stop talking about market competition as a battle where the only outcome is a single winner? That is almost never the result and almost never what you want as a customer/user/consumer.
I can absolutely guarantee that my ending question will have a meaningful answer, either one or none of these systems will be the one that everyone uses, the other two will be the "niche" ones that hardly anybody uses (and I say this as a diehard Amiga fan boy). And as much as I might dislike the choice the market makes, I understand that once critical mass is achieved, it becomes economically unviable to continue investing in the "losing" technology.