I am not sure that I could do more with $10T than with $1T, but by "do more" I mostly mean "bring about a friendly singularity faster". I'm pretty sure that even $30B would be enough to essentially max out the chance of a friendly singularity, but extra money up to $1T or so could almost definitely bring it about faster and save lives in the mean time. I'm not going to give my spending proposals in depth though, beyond what's already present in my paper "Corporate Cornucopia".