There are enough examples which one might mention here: Nokia, MySpace, Yahoo, Kodac, AOL, Blockbuster, toys‘r‘us … all ones big. Yes, oracle might not vanish, but it definitely needs some change.
None of those were in business since 1977 (w/ the exception of Nokia, which I would argue is still a successful company today. I wouldn't put it on that list).
None of those were ever valued (even close to) half a trillion, even adjusting for inflation.
???
None of those were in business since 1977 (w/ the exception of Nokia, which I would argue is still a successful company today. I wouldn't put it on that list).
None of those were ever valued (even close to) half a trillion, even adjusting for inflation.