Most Outsourcing arrangements are often multiple vendor set up for very obvious reasons – allow them to compete on all fronts and gain pricing advantage. However there are cases where single vendor is an approach, this happens more from the vendor side that often tend to negotiate to be sole provider for a discounted price. The clients falls for it not knowing how this will impact in the long run. This is not an uncommon practice starting in early 70s, then 80 when large corporations in developed economies mostly in US and Europe outsourced their IT departments to concentrate on their core business.
It works well initially till the outsourced vendor entrenches itself, gains the confidence and then begins the downwards spiral. At times it has been quick within five to ten years, and some that slightly lasted more than that. In every relationship the initial years though it begins with struggle, you get the best top to bottom and once the investment phase is over the outsourced vendor starts looking at their bottom lines to see how they can squeeze more out of the deal. Hobnobbing for couple of years it is easy to get cozy at all levels and see the service levels drop unless there is a good way to measure and improve on the performance benchmarks. The initial bar set low should be gradually scaled so the contractual performance improves not stagnates.
The influence of senior management on single vendor situations are not uncommon. The appreciation and understanding at that top-level is not commensurate with what is happening at the ground. The need to support single vendor solution keeping in view the economies it provides to the clients bottom line tops all judgment. The message always to the lower cadres is to fall in line and keep the relationship going at all costs. It is only when the worst nightmares surface that management take notice and take remedial action, by that time the damage is done. Stories about of clients that lost all of its competitiveness, time to market, lost a ton of money, their brain power before they decided enough is enough and threw the vendor out and move on to other strategies from finding a new partner or totally bringing everything in house. It takes years depending on the size of the contract to get back in shape.
Single vendor relationships tend to look like a financial boon initially given the pricing advantage, however it tapers off very quick. It is always good to have atleast two if not more vendors compete for your outsourcing dollars. Every benchmark you care comes into play and competition plays it out driving the advantages and improving overall efficiencies