I’ve developed a strategy that consistently gives me an edge — not some holy grail, but something that works well enough to beat randomness over time. I’ve been thinking about discussing it or teaching others, but I keep hearing that once you share an edge, it disappears.

Is that actually true? Like, if it’s based on fundamentals or macro timing rather than some microstructural inefficiency, can it really be “arbitraged away”? Or does that only happen with purely technical or quant signals?