PS3 cost Sony 2 billion in profit.

This is pretty cut and dry; The PS3 has cost Sony 1.9 billion US dollars in profit. Kotaku reports,

While last year Sony Corp as a whole raked in 226.42 billion yen (USD$1.88 billion) in operating profits, this year, they could only scrape together 71.8 billion (USD$596 million). That's a drop-off of USD$1.28 billion dollars. Think that was because of the PS3? You bet it was.

Ouch...