They don't break out the profitability of some subunits, but according to the WSJ it was "breakeven"[1] in 2014 with $4B in revenue.

I still don't see where the GP comment's confidence that it's not meaningfully profitable comes from. It doesn't seem like an uncontroversial assumption that costs have more than septupled in the last five years in the way that revenue has.

[1] https://www.wsj.com/articles/viewers-dont-add-up-to-profit-f...