Oracle certainly has. Several GBUs realized they were working towards the same goal of a microservices base layer for future service hosting (for handling auth, logging, databases, etc.) and combined their efforts, and I happened to work on one of the resulting teams.

I'm not sure how public they've been about all this, but you certainly can teach an old dog new tricks, provided there is management buy-in (which we certainly had - at one point, our teams were moved between GBUs to save us from budget cuts).