Android was not created by Google. Android was created by Andy Rubin in 2003, and was bought by Google in 2005. It is now actively developed by the Open Handset Alliance, which is led by Google.
Now to your point about open source, you seem to think that anyone who creates open source programs are idiots. With open source, it returns control to the user. You can see the code, change it, and learn from it. Bugs are found and fixed much quickly and when users are unhappy with one particular product or vendor, they can choose another without overhauling everything - you aren't locked in to one particular vendors products.
As a result, the open source model often builds higher quality, more secure, more easily integrated software. And it does it at a vastly accelerated pace and often at a lower cost.
In the proprietary model, development occurs within one company. Programmers write code, hide it behind binaries, and charge customers to use the software--then charge them more to fix it when it breaks. The problem worsens when you become tied to a company's architecture, protocols, and file formats. Bruce Perens calls this the addiction model of software procurement. And we think a model that puts customers at such a fundamental disadvantage is conceptually broken.
Open source is not nameless, faceless, and it's not charity. Nor is it solely a community effort. What you see today is a technology revolution driven by market demand.
Imagine if all past knowledge was kept hidden or its use was restricted to only those who are willing to pay for it. Education and research would suffer. Publishing books or sharing information of any sort would become difficult. Yet this is the mentality behind the proprietary software model. In the same way shared knowledge propels the whole of society forward, open technology development can drive innovation for an entire industry.