Thank you. But I don't think we know the whole story. I am also not sure if those Forbes numbers are accurate, but even if they are off by a lot, it doesn't matter. They don't want to pay for "past performance" (TM, PTR, 2017). They want to build a franchise by underpaying pre-arbitration and arbitration players and supplement them with veterans. But they won't pay a player one penny more than they think he should make, even if he's the best fit for the team.
I also think they are greedy mother horsefeathers and don't want to share profits with the other owners. So they have bought up the real estate around Wrigley and are heavily in debt (right now). They are using the Cubs to leverage their real estate speculation and finance their debt. It's probably all perfectly legal, but it means their "profit" is going into other things besides the Cubs. Again, probably perfectly legal. A cynic might even call it smart. So their overall goal is to create a destination and have Cub fans pay them the moment they get off the El until they get back on it or back to the bus. And their prices make Bob Igor blush.
So when PTR says they are trying to just break even, he's probably not lying, but he's not telling the whole truth either.