If all the games are conference games it is a home game to somebody the conference has the rights to air. The TV money is the same because the networks own both the home and away rights of intra-conference games.
I do see your point, however, when it comes to gate revenue. It clearly makes it more difficult for PSU and OSU to have 8 home games. Most could live with 7 home games but that means less matchups with other P5 schools.