We have a single server install of Oracle EBS used by ten people in accounting. Quote to upgrade *just* the database tier is 20K, app tier 50K, and if we just wanted the service side java updated so I didn't have to run some four year old compromised JRE on clients that I have to block updates on? Another 10K. Or we can move to their new cloud version which will have a 90K migration fee, and replace our current 15K a year on prem maintenance cost with an annual 48K subscription cost.
Oh, and it still doesn't support SAML or even AD authentication without spending like 20K on some Oracle identity platform, so it's like literally the only enterprise app left on my network that has its own authentication store, while everything else is SSO'd through Azure CA.
By far Oracle is the worst company to have to deal with, though AT&T jockies for first place, and Crestron takes a distant third.