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no. Support isn't free.

Also, Sun did make money on Java with certifications and some licensing.

Yes, Sun did make money...but not nearly as much as IBM and the entire stack of Java tech they came up with...all impossible without Sun's invention.

Support isn't free but anybody can also sell support.

Yes, but if I'm an enterprise support customer - I'd much rather buy support from the people who build the product.

But from an enterprise perspective "the product" likely means the GUI (e.g. DC/OS or DUCP), not some daemon buried layers deep.