. . . it has evolved exactly as intended.
As who intended?
I don't think Google sat down five years ago and planned a future where companies like Amazon would use their work and completely cut them out of the revenue stream.
When Google purchased Android, their main concern was Microsoft's Windows Mobile. Google did not want to take chances and wind up locked out of the mobile market if Microsoft pushed their own search solutions by default. The easiest way to gain traction with their platform was to give it away for free, giving Android a serious edge of Windows Mobile which manufacturers had to license from Microsoft.
Android has been hugely successful for Google, but it's gone beyond what they probably envisioned. In another ten years, it might even be silly to primarily associate Android with Google.
