To be honest, it's the procurement processes at fault. Driving down the price may look like efficiency, but bidders absorb risks to win deals. If procurement collaborated 'open book' with a selected agency, they would get better value and more openness regarding risk.
Public sector always did for years. I remember council staff building £30 million road schemes, providing IT technical support for organisations with 15,000 employees and feeding our kids every day as they did for over 80 years before outsourcing. Capita shows private isn’t best!