Re: Capita is "too complex"?
Not always true. The average idiot sales team selling buttons will always run in 3 month sales cycles, there are other industries out there that work to very long lead times.
Large petrochemical plants can take 3-8 years to get through the design spec/permit/construction phase. Many UK offshore wind turbine sites (round 3) have taken 10 years of development to get this far and will take another 5 years to complete.
Tesla has spent 10 years designing the Model S and getting the Gigafactory built (nearly there).