tbh I never though much of Sega, even back in the day. A few friends had Master Systems and they were ok... but I never cared enough to buy one for myself. I did get a Dreamcast and loved it, but the support died so fast.
Xbox og wasn't on my radar until very late in its life cycle, but it had some great games. 360 was my system of choice for its gen, and I got a PS3 later on and loved it as well, but Xbox One was pretty awful. One X was a great system with bc and GPU with MS Rewards was really good at the end of last gen. Series X is a great machine, but MS just never seemed to care for the system's success, so why should anyone else?
So, at this point for me, it's down to Nintendo and Sony, and if either of them go all-digital I won't be supporting that kind of a platform. I don't think I'd have any interest in a new company jumping in the ring.