One advantage is a standardisation for the client. David saw this as a result of the Olympics. Quoting against other event companies is reduced from 6 to one or two. The needs for proper metrics to forecast events by clients q A move towards in-house event management by suppliers. However this can lead to conflicts with the event companies as they will be competing with their suppliers for events.
Retainers are on their way out.
At one stage corporations would pay an event company a monthly retainer. Venues are letting go their preferred suppliers as it stops some event companies from hiring the venue. The client pays a small amount for the event proposal to the applying event companies - howeve r the client owns the ideas . A move away from high tech events to high touch events. Each manager is a specialist and therefore the consortium has the competitive edge.