[anon1m0us]

Google is not greedy? Oracle paid money for Sun and the property Sun owned at the time. Google said, nope, we'll just copy that property for ourselves and keep our money. That seems greedier.

[monocasa]

Sun bought and continued development of OpenOffice to avoid paying MS Office licence fees.

Not wanting to pay licensing fees, and therefore writing your own interoperable clean room reimplementation is both legal and moral.