The modem was an external add-on, there wasn't any special support for it built into the consoles. I think one reason why it wasn't a big success was that a lot

The modem was an external add-on, there wasn't any special support for it built into the consoles. I think one reason why it wasn't a big success was that a lot of its appeal was being able to easily do stock trades and check your brokerage account from home, and the Japanese stock market started its decline in the early 90s. I don't think many people were excited to subscribe to a service whose main purpose was showing them how much money they were losing. Interestingly, the JRA (Japanese horse racing association) continued accepting remote bets from Famicom modem users until 2015. Here's a video of someone placing a bet in 2008: https://www.youtube.com/watch?v=ks0JeyhZsR4 https://www.youtube.com/watch?v=ks0JeyhZsR4