Not sure , it's also about sells arguments.
Governement often runs on Oracle because it was the most popular RDBMS at the time with enterprise support. So this is a massive argument technically speaking to convince customer : "We'll migrate your oracle DB and infrastructure for you , we have the tooling for that".
...outright corruption, though that coming brilliantly to light in the 00’s in California is also why comparatively little in California State government does any more. (Also why the trend toward IT centralization in the State was stopped dead in favor of decentralized decision making with central oversight.)
http://articles.latimes.com/2002/may/07/local/me-oracle7
Although to be complete transparent, there are multiple examples of this, so I’m not sure exactly which one GO away referring to.