Ahh those extrapolations. Just like MPAA and their piracy spiel. Multiply 22`000 * 365 days * $3 and you get their $25M. Except a lot of those people simply would never pay the actual fare and the cost of moving additional weight is negligible, so the number is way inflated.
You're comparing people who pirate media that they'd never have actually bought to... people who take BART trips for free that they've never have taken otherwise? You're going to have to work harder to make this comparison work for me, sorry.