Microsoft platforms move too slowly too keep up with innovation pace, and suffer from classic platform restriction in regards to building useful, relevant, and *reliable* integrations into business systems.
My advise is to always start from scratch with AI, e.g. "build your own agent" and focus intimately on the rules/guardrails and custom tools you need for that agent to create value. A platform can't do that for you in current day.
MSFT needs to stay focused on O365 and coding tools with very simple UX wins. Not introduce custom agent platforms and auto-embed intrusive agents where no one asked for them.