Nintendo.
Not just crushing fan games, but also issues with the Smash bros community, pricing and availability, eshops shutting down (+needing to buy those games again on new consoles or it’s not even available at start), stick drift, fan content policy, also Youtube strikes/claims (both newer for specific reasons and an entire era for let’s plays in general). 20 years of content removed from Gmod.
And no this isn’t about Japanese law, they choose to be this way.
For actual specifics (and more issues) 2 videos: UKD_wnB9AMU and xgKY9hmbfgo
For me the content breaks after the first image so I couldn’t see that information. But seeing a belt drive gives me a clue of its likely price-range.