Oracle only owns brand name "mysql". That's it. As for the code base, it can be forked and improved by anyone (e.g. mariadb, drizzle etc). If Oracle decides to deliberately slow down mysql development and try to kill it, it will not work. In the long term, I think mysql and other open databases will devour oracle's proprietary database marketshare.

Yes that's why Aurora will not make any dent in converting companies from using Oracle db to mysql like databases. The barrier in conversion of stored procedures with complex business logic is formidable and Aurora does nothing to lower this.

Yes that is correct. For commodity low end servers, mysql will perform much better than oracle in oltp typ transaction throughput. I did tests myself and saw 10X better performance with mysql vs oracle. Complex queries are different story however.