The thing that kills me about Oracle is that since the license does not allow benchmarking, we (or at least I) don't know how it actually stacks up to the competition. Of course, that's the idea, but it would be cool to have that data.
[0] https://www.brentozar.com/archive/2018/05/the-dewitt-clause-...
Wikipedia article: https://en.wikipedia.org/wiki/David_DeWitt#The_%22DeWitt_Cla...
It's plainly illegal, but nobody who has built their business on Oracle DB wants to piss off Oracle the company with a lawsuit, and it doesn't appear any legal activists want to either.