Those costs are not at all kind of like externalities because an externality is an impact on a not directly involved ("external") party. But these costs are all

Those costs are not at all kind of like externalities because an externality is an impact on a not directly involved ("external") party. But these costs are all on the organization who decided to outsource, so — unlike with externalities — one shouldn't expect a market failure, and the article does not provide evidence of one, or even claim one.