Let's be clear about this, Google's really been in the hardware business for about what.. a year, maybe 1.5? Any product pre that was developer oriented. I don't think you can expect a company to be shipping 10 million units when it has really only started to tackle general market hardware, let alone compare them to a 30+ year old manufacturer. For starters the market adoption has barely begun in the public eye.

That said though, they are starting to do what matters most, build great products... and that is what is the start to market acceptance. Guaranteed success? No... but certainly looking like they are figuring it out.