And then when will that "saved" money go? A high-speed rail? I don't think so. A tax cut for private jet owners? Probably: https://www.politifact.com/factchecks/2022/feb/18/melanie-da...
With zero spending, there will be zero waste and corruption. I will create zero bugs if I write zero code.
Just like VCs expect a tremendous amount of waste when going for wealth appreciation, so should countries expect waste when investing in science, research, and innovation. There will be waste, there will be fraud, but the options are either play the game or be left in the Middle Ages.
In the same fashion, let's have innocent children go hungry because some adults abuse social programs. Let's stop all military R&D because some contractors are overcharging.