I really hope Steam International access still available in mainland and Steam China only for Multiplayer Esport games.
Because if it's truly blocked:
1. Second biggest market on Steam International (based on Valve research) will gone
2. Which make most of Japanese and Chinese made games (the one Chinese like ie: MHW, Three kingdom, Anime and Martial Arts Cultivation games) massively dropped in revenue
3. In the end: will massively decrease the availability of PC port Japanese and Chinese games in the future AKA back to Console only (for Japanese games) and Steam China only (for Chinese games)
I truly hope above scenario would not ever happen.