As long as MySQL remains a freebie, I don't see an issue. But if they try to turn it into a fee-based DB, it will destroy an excellent DB.
Sun Microsystems developed Java. It was originally intended to be a system for home automation. Most people do not know this factoid. It failed at that.
In the late 1990s, many pundits claimed that Java was going to take over and dominate the Web. For a brief time, JSP sites were popular. It failed at that.
Then, Java applets were going to add wonderful features to web sites. It failed at that.
It did, however, find a niche with enterprise systems and works well for that application.
IMHO, Java has always been a resource pig. It is inherently slow and that is why it has never dominated the Internet.