In addition to the other posts consider what's happened to the energy market in the UK. Lots of little suppliers set up who all sourced their product from the same supplier. If a company/person bought from two of those little suppliers it would have made no difference when the shit hit the fan.
Unless you do "proper" due diligence and trace the supply chain back to the prime source you could have several suppliers and still be buying from the same source.
Biting the hand that feeds IT
