I don't know about first. Feature flags is somewhere down the list, behind email and comms and scheduling and todo's. AI can vibe code the shit out of a Todo app. Google Workspace wants $7/$14/or $22 per user per month. Times 50 or 100 people, that's not insignificant. Closely behind that there's the (financial) books. QuickBooks is the 800 lb gorilla of that industry and everyone just goes with them because book keepers know how to use them. There's no shortage of competition, especially AI competition to replace the human bookkeeper with an LLM. We'll just have to see where things go though.