[inglor]

The reason they built Chrome isn't just that - google pays/paid other browser vendors __hundreds of millions of dollars__ to be the default search providers ($300M to Mozilla per year for a while). Owning the web browser gives them tremendous power and saves them money.

[pbiggar]

I remember reading that they spent $100m on advertising chrome in one quarter, just in the UK. So I don't think $300m/yr really matters that much. I think with Chrome they were far more concerned about the risk of losing the default position for searches in Firefox (correctly, as it turned out!)