I run a remote-first ecom business with a dozen or so team members.
About a year ago, one of our account managers had a life issue, ghosted us, and she held a fairly critical role in the business and gate-kept a bunch of knowledge to some high value vendor accounts.
Because we ran our ops in Google Workspace, we essentially had off-the-shelf RAG and was able to get answers to a lot of things by asking Gemini to go through all her emails/docs/calendar/meetings, reverse engineer what she did, and create an onboarding doc for her successor.
This happened once more a few months later when one of our analysts broke his wrist on vacay, and we were again able to replicate what they did to cover for their absence, this time dabbling in AI agents ("gems") to do a bunch of the regular simple tasks and again it covered things without too many issues.
I def expect Amazon/shopify to at some point replace all of us brand owners with AI bots if they can, but we'll see how long the gravy train goes on.
If you're replacable by an llm, then you're doing something extermely poorly. They're terrible decision makers, have no taste and have little to no ability to infer nuance.
Your business should be fine for a long time (assuming an employee doesn't nuke your business's backend or something because it seems like you're doing something wrong on the HR side of things)