It wouldn't be a lie, it would just be accounting. And honestly I don't know the accounting practices around such large organizations.
Basically Disney+ charges Disney studios for Disney IP. Disney studios gets $3B let's say over x amount of time for the deal, and Disney+ spends that amount of money. Meaning Disney+ loses money, while the Disney portfolio as a whole breaks even on the trade. That's not even to mention the value there is bringing people into the Disney ecosystem, making it more likely to visit them parks and buy more merchandise.
I don't think it's fair to look at Disney+ in a vacuum to compare to other services.