This analogy is completely wrong. Key points:
- Physical objects are not AT ALL the same as thoughts/ideas such as software
- Copying software is not the same as stealing an object, since copying doesn't take away the original, whilst stealing an object does.
- Oracle hasn't stopped giving away their JRE, you can still download it free-as-in-free-beer. They're just being assholes to free software for no recognisable purpose, as they do so often.
- The post you replied to never said anything about kicking Ubuntu to get OracleJRE inspite of this being technically illegal - it talked about kicking them to try to track down and fix the bug in OpenJDK