Somebody has to own the whole picture. Usually, nobody currently does.
In a lean organisation, technology decisions tend to get made one at a time, by whoever is closest to the problem when it comes up — a new starter needs a laptop, the website's due for a refresh, a vendor renews a contract automatically, a grant requires a data policy nobody's written. Each decision is reasonable on its own. None of them are being weighed against each other, or against where the organisation is actually headed.
A Virtual CIO engagement puts one experienced person in that seat on an ongoing basis — not to run day-to-day IT, but to hold the roadmap, flag the risk, and make sure leadership is making technology decisions with the full picture in front of them.