A long time coming...
This isn't such an interesting concept really these days when I have a 32-user cell complete with roaming core network, that I can put in my (rather big) pocket. The hardening for space is what makes it more challenging, and of course the UE side and what will be anchored from that. What is interesting with all the 5G hype these days is that 4G is the technology of choice... those of us that work in the industry and who are honest enough to agree with the pitfalls (for true SA it's mainly chipset and UE vendor lockout) would agree that even in 2024 LTE is the way to go.