What I am trying to say is that it was a convergent decision to buy from a single manufacturer (although perhaps cost-driven), rather than a decision to, in ord

What I am trying to say is that it was a convergent decision to buy from a single manufacturer (although perhaps cost-driven), rather than a decision to, in order to reduce costs, have only one manufacturer. Making HDDs is quite difficult and there is only a handful companies that can do it. If the barrier to entry was lower, there would be more different manufacturers and probability of relying on single manufacturer would be reduced. Like in most other industries.