Why Is It Still So Hard To Trade Large Size Without Slipping 2–3%?

Trying to move even mid-size capital on-chain without getting hammered by slippage is still a huge pain. You either get partial fills, bad execution, or you end up breaking up the order manually across multiple pools. And even then, it’s a guessing game.

I feel like deep liquidity exists somewhere, but it’s never accessible to individual traders without an OTC desk or insider channel. Has anyone actually found a platform that can handle large orders cleanly?