Corruption = simple and direct alteration of the original state or characteristics of something.
Corruption in games has more to do with the normalization of sexual acts that were initially not standard for MCs, LIs, and NPCs.
But if you look at the Corruption Tag as if it were synonymous with Incest, Netorare, Netorase, and Prostitution, mind control, it is not productive. In the Incest Tag, sex between the MC and a family member, brother and sister, is not corruption, but convincing parents that this is natural to the point where they allow sexual acts openly is corruption.
The Corruption Tag for a wife would encourage her to be more sexually assertive, wear sexier clothing, be more receptive to anal sex, have sex in public places, allow her husband to grope her, or use toys for him, etc. However, there is a huge possibility that she might cheat with another man. For this, we already have the Netorare and Netorase Tags.
Although other Tags already mentioned have elements of corruption within this fetish, it is used for a greater purpose.
That's my point, you may disagree.
English is not my language and it's very bad.