Normally I would agree with this.
But with Notion in particular, and how heavily they're pushing Notion AI, I could see some c-level exec types being uncomfortable with the idea of Notion (or any managed/hosted service) to store trade secrets, company IP, etc.
When a company is pushing AI features as heavily as Notion is, it raises questions how Notion is planning to (or already using) your private data for fine tuning, model training, potentially scooping up your company's IP in the process.