Oracle makes all of their money on pro services contracts for niche proprietary software in industries you’d never even imagine. Things like “the software folks use at hotel front desks” or “the kiosks libraries use to manage print queues” or “the things schools use to process payroll.” It’s all ancient software with weird licensing agreements built on the back of massive pro services agreements. Tons of people use or interact with Oracle products every day and you’d never know it. They’re insidious like that and they own or manage tons of other companies or at least the pro services for those companies and so they’re basically impossible to avoid interacting with if you work in niche enterprise software.