I suspect you are not familiar with the exact nature of Oracle's behaviour. MS, Google, or Apple have not gone after their own paying customers (counting Android users as assets, not customers) with legal threats just to extract more money from locked-in customers, nor have they argued in the SCOTUS that APIs are copyrightable.

There's "unethical behaviour", which is a wide spectrum, and then there's Oracle, which occupies a distinct area on the spectrum with few neighbours near it.