If there were a sufficiently smart government with a sufficiently demonstrated track record of cluefulness whose relevant officials seemed to genuinely get the idea of pro-humanity/pro-sentience/galactic-optimizing AI, the social ideals and technical impulse behind indirect normativity, and that AI was incredibly dangerous, I would consider trusting them to be in charge of a Manhattan Project with thousands of researchers with enforced norms against information leakage, like government cryptography projects. This might not cure required serial depth but it would let FAI parallelize more without leaking info that could be used to rapidly construct UFAI. I usually regard this scenario as a political impossibility.

Things that result in fewer resources going into AI specifically would result in fewer UFAI resources without reducing overall economic growth, but it needs to be kept in mind that some such research occurs in financial firms pushing trading algorithms, and a lot more in Google, not just in places like universities.