I don't think the losing 90% are programming algos, personally. If you can program an algo you can test it, and if you can test it you can see if it's worth releasing into the wild.
better yet, you said 15yr edge of yours has recently stopped working. why? what changed that took away your edge and left you now impotent? algos
I wouldn't exactly call it impotence. I'm not relying on viagra just yet. I still find myself throwing lethal punches, just not as often. However, the day will come when I break the damn code of theirs. You just wait.