Because outsourcing IT is not the be-all, end-all solution to IT's issues.
I work in a small to mid sized IT department of around 32 folks. Programmers, analysts, architects, admins, etc. Our parent company pretty much leaves us to our own devices.
The company used to be an independent operator in our industry. It was bought 3 times over the last dozen or so years. The first 2 purchases integrated us into much larger companies. The most recent one spun us back off as a wholly owned subsidiary of a holding company that owns other companies in our industry. The IT structure changed dramatically with those ownership changes.
I'll just focus on the first purchase as that's the one with the greatest IT impact regarding outsourcing. During the acquisition process we fought the usual battles for autonomy vs full integration and won that battle for the most part.
The parent company's IT department was orders of magnitude larger than ours, but nonetheless it was reasonably lean and responsive to internal and external customer needs. If I needed s subnet for a new location or a routing change on a router, a call to corporate usually took care of that is 24 hours or less. Usually a lot less.
Then they outsourced. And not to an unknown player, either, but one who most folks have heard of and know fairly well. Names will not be revealed in order to protect the incompetent. Form that day forward, any time that we needed anything from "corporate," it had to go through a committee at the outsourcing company. Suddenly a 3rd party was telling us whether we could do what we had been told to do by the corporate masters. What used to take a few hours was now measured in weeks and months.
We had to spin up a new location with a fairly short lead time. The ISP was unusually responsive and we had a circuit in in about 45 days. For anyone who has ever dealt with AT&T or Verizon, you know that that's pretty good. In fact, it's impressive. At the same time that we placed the order from the ISP, we ordered a new network subnet from corporate. Previously we would have had that within a day. Three and a half months later, we had our address assignment. We'd been paying the ISP for an expensive circuit that we couldn't use for about 2 months because the outsourced IT department at corporate could not get their collective heads out of their posteriors.
Thank the Flying Spaghetti Monster that we did not get swept up in the outsourcing or we'd still be trying to spin up that new facility 4 years later.
It got worse when the company was sold as the outsourced IT operation discovered that their contract was being terminated. Reintegration of the IT operation to in-house was a major headache as they simply refused to provide any information necessary to do so. When we were sold the 3rd time, we were spun off from our former corporate structure to become an antonymous operation again so we didn't need to deal with any of that BS any more -- we just literally unplugged from their network and went on our merry way.