When a game shows an unskippable ad, the user is consciously aware of what is happening, as it is happening, and can close the program to stop watching the ad. It is in no sense comparable to what you describe.

When a third party library bundled into a game makes ongoing, commercial, surreptitious use of the user's Internet access, the vast majority of users aren't meaningfully consenting to that use of their residential IP and bandwidth because they understand neither computers nor networks well enough to meaningfully consent.

I don't doubt your bases are sufficiently covered in terms of liablities. I don't doubt that some portion of whatever EULA you have (that your users click right on past) details in eye-watering legalese that you are reselling their IP and bandwidth.

It's just... The notion that there has been any meeting of minds at all between your organization and its games' users on the matter of IP address and bandwidth resale is patently risible.