Yea but the Japanese IC card system has complete interop between all transit systems run by completely different private companies. So you can hop on a train from one city to another and then hop on a bus in that new city on the other side of the country all using the same card.
And a good chunk of vending machines in Japan accept the IC card. Sometimes even food shops a step above vending machines.
Japan has lots of IC cards in various regions, and they have spent a lot of effort integrating their system. Unfortunately some IC cards like Kumamon decided to opt-out due to high maintenance fees.
AFAIK, you can go through up to 4 different company networks once you enter paid-area. Beyond that, you'll need to do the override settlement (乗り越し精算) with the help of station staff.
And a good chunk of vending machines in Japan accept the IC card. Sometimes even food shops a step above vending machines.