Yep, this reminds me a lot of how things were before the early 1990s, when the Soviet Union and all the countries aligned with it were behind an "Iron Curtain" and there was very little communication and trade between the two sides. I just hope there isn't a massive war between the two factions, and we can move peacefully towards having complete economic isolation between them like we had before.
I can imagine technological "divorces" will happen more often going forward, as the polarization between the G7 and the BRICS++ members grows.