It doesn't take a designer or user experience expert to note that google products lack consistency and don't interopt with each other very well. I think this stems from larger issues that are much harder to fix, or through 20% projects and acquisitions that were developed independently of a common set of standards. I doubt they are ignoring it.
Perhaps the lack of a "Google standard" enables eager developers to create amazing new products, like Gmail.
I don't think that having a hiring system that's not fucked up and actually researches the guy would set a "Google standard".
You can also keep launching amazing products with a recruiting process that makes sense, and doesn't analyze the guy with semi-random stupid questions.
People constantly using "guy" and "programmer"/"computer scientist" interchangeably might be part of the reason why so many women avoid computer science.
Perhaps the lack of a "Google standard" enables eager developers to create amazing new products, like Gmail.