Please look into the Zero Data Retention policies of the subprocessors that you are using. For example, Open AI does not include files as falling under their ZDR [1], thus utilizing OAI as an LLM solution inherently adds unnecessary risk of data exposure that many enterprise clients do no want to onboard. Also, you have to think about those companies obligation to their clients/customers when it comes to data security, along with the risk of IP being exposed to 3rd party systems that they do not have control over, when they make their decisions when it comes to utilizing various business solutions.

[1] https://platform.openai.com/docs/guides/your-data#zero-data-...