Most of those have merit, but I will say:
* Sun released Java for others to use. You [read: the courts] can argue about the terms of said release, but it was released for free use on computers if not phones [as if they were different...sigh...]. If Google had developed a language called Microsoft J++ that was similar and pushed it as their alternative, you would have a point. Google uses Linux too. That's what it's there for; use.
* Altavista, yahoo, etc did classical AI methods relying heavily on human labeling. Google used what we now call modern (read: statistical) AI, and did not offer paid placement [I don't recall if Yahoo/Altavista did paid placement but it was common practice back then] To a former AI researcher you might as well say that Google is unoriginal because they and Microsoft both use computers, or that the automobile is unoriginal because horse and buggy also has wheels.
Other than that, I can see your point.