A jannie is a mostly worthless facsimile of a breathing, consuming, defecating pond muck protozoam. They always and only work for free.
It's good to know that's not you.
Yes, things in this world should be things we consent to. Might makes right though, and the Jannies and their employers, the Glowies and Biznizz glowies, needed to trick the Western people of this world that consent is a thing.
Pretty sure we don't consent to all the things they do but we can pretend consent between each other is a tacit baseline providing a modicum of civility betwixt strangers.