My last company was entangled in the Oracle web of vendor lock in. Before renewing our contracts, Oracle wanted literal access to our proprietary code - much of which is older code that mixes business logic and logic that works directly with Oracles products. Many of the algorithms we had implemented were 100% proprietary and secrets - not something we want just anyone to see, especially a competitor. On top of that, this company had IT contractors that had built all kinds of functionality using one off features only available in Oracle - shit that didn’t scale with new and upcoming use cases but also just a huge pain in the ass to migrate off of.

People think AWS or Azure risk vendor lock in. Oh boy you do not know what true evil actually is - Oracle literally prays on this happening. It’s the foundation of their business model. Not features, not innovation, nothing else - but solely ensuring your customers have no alternative but to use your products at whatever cost you want or drown in litigation.