You don't need protracted processes that take years to look at the case for the introduction of new equipment and the selection thereof.
In Oz we took the C-17 and Super Bug projects through to the end in a couple of years on time and on budget. Why? Because we purchased off the shelf proven technology. Good enough for Uncle Sam then good enough for us. As someone once said never buy the "A" model of anything...
Small nations like us cannot afford the luxury of developing our own versions of high tech stuff to be built in small quantities. The R&D for a start has be be amortised over such few units the economics just won't cut it.
Singapore is a great model for getting things done. Years ago a friend of mine worked for Northrop when they sold F-5E's to them. He was part of the sales team of three people who meet with PM Lee, the Defence Minister, Head of Finance, Chiefs of Defence Force and Air Force and a couple of others in Lee's office. Three hours later basic deal done. Off the shelf models purchased and the support train developed during the aircraft build time. Voila, all on time and budget. Also my friend told be Lee pushed the pricing himself!