Why do you think that Japanese companies are going to stop putting their games on Playstation? I haven't seen that any indication that big companies like Square-Enix, Sega, Koei-Tecmo, Bandai Namco or Capcom are not going to release their games on PS5.
I don't think they stop, I'm saying that if they ever did, the sales would have been rock bottom as Sony themselves does nothing to support sales in the market. The very low software sales attest to both this and that quite a lot of consoles have been scalped out of the country.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454
List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/