The issue with Oracle JDK is you _have_ to pay even if you don't use it. If there's just one person in the company using Oracle JDK they bill you for the entire company headcount.

Earlier licensing practices were not much better; my company did a 'hard purge' a few years ago and everything using Oracle JDK+RDBMS is now running on OpenJDK with a PostgreSQL backend.

Don't know what rooting for Google and/or IBM would help. All companies that size do have their shady side and will sometimes do questionable things. They didn't get to be so big just by being nice...