alt Hacker Newsmargins can't be compared to interest rates, because it's comparing revenues against costs. Comparing that with interest rates yields nonsensical results. If you want a proper comparison, you'd need return on capital, which requires you to figure out how much capital is in the gaming division.
Why not?
If you input $1000 into process A which returns $20, and inputing $1000 into process B returns $30, you'd be insane to invest in process A and not process B, right?