Until the first audit is failed
And the SEC fines the company for an SOX failure or some other regulation. Until a legal lawsuit comes against the company, and the advisary can prove your IT didn't turn over all the requested documents ....because of a system they didn't know about in a business unit. And that business unit cloud contract -- turns out to be in another country that refuses to put in the work necessary to extract the requested information, since it wasn't in the negated contract.... all the savings business had in its day to day will be gone plus more in one bad law case or audit failure. Since if you can't produce the documents in discovery, odds are you are not going to win the lawsuit. Or the cost of getting the documents will cost more than any savings in IT.
