What did they do with it? Have you looked at the insane amount of engineering they have done in the past 8 years? Their Javascript engine is among the fastest in the world. An insane amount of money has been pumped into hiring world-class experts to develop it. Not to mention the continuous improvements to their rendering engine, marketing and awareness projects, charity projects to get minorities like kids and women into web development, fighting legal battles against patent encumbered technologies like H264, etc. You are seriously underestimating the amount of money they need.