"[M]ore efficient and transparent" are at odds with each other. Transparency requires more process and scrutiny and inspection; more of these things increases project risk because bidders need to invest more money in getting the bid, and that increased risk is amortized across successful projects. It also has the effect of favouring entrenched interests and existing players because 1) they know the process, and 2) have the capital to endure longer lead time in sales.