Jaguars and Grid Control

A friend was talking about licences of Grid Control packs. I told him:

Mate, prices are always negotiable with Oracle. And besides Oracle openly
publishes its list prices. The packs are only a fraction of the cost of the
Enterprise Edition software in any case, Besides, you pay for what you get. You
have the Oracle database, and you need the best management tool in the world to
handle your database.

Oracle know best about their database themselves, why would you buy a tool from some other company to manage it? Get the management tool from Oracle. If you have a Jaguar (owned by Tata), and all cars have electronics and computers nowadays, would you get the management software to run the car from a totally different car manufacturer, or from Jaguar itself?