You can use a digital Suica in Google Wallet only if your Android phone has Japan-spec hardware . International Android phones bought outside Japan generally cannot support digital Suica cards in Google Wallet.
Apple pays the fee for all phones in the world to have the chip. Google only pays for Japan devices.
https://xdaforums.com/t/global-pixel-device-unlock-felica-su...
I assume it's a licensing issue, where Google is too cheap to pay JR for the phones sold outside of Japan, so only setup the JP models and only pay the license for those.