For the most part, this is true. However, this is because most traders are greedy and try to extract every last 1/10. They want tight spreads, no last look, etc. But... there are ways to do it that are deemed friendly but you have to know how to structure it. and of course HFT programs that can hook up to multiple LPs thru their PB are actually encouraged if structured properly.
How much is acceptable arbitrage and how would you structure it? Sent you a PM if you prefer to answer that way.