From reading the law, reselling of licenses is permitted but there’s nothing forcing software platforms to provide tools facilitating the process.

IANAL but I think this would make reselling a Steam account within the EU perfectly legal, regardless of Steam’s TOS, but otherwise they’re unaffected.

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Edit: Looking at some of the actual law cases which followed this ruling, user accounts and video games (along with basically any creative work) are not covered in any way.