OpenJDK is still free, open source, is built in to almost every OS and has distributions by multiple vendors e.g. Amazon. Oracle is simply charging for enterprise support which seems pretty normal to me.
In enterprise? No way. Enterprise and IT orgs are already perfectly willing to shell out cash for Oracle databases, why would Java licenses be any different?
All depends on how desperate Oracle gets; already we hear of a lot of high priority migrations to PostgreSQL starting after a visit from the Oracle Police.