I disagree with the notion that your edge has to rely mainly on the infrastructure or insider knowledge. In today's markets you often have the case that very we

I disagree with the notion that your edge has to rely mainly on the infrastructure or insider knowledge. In today's markets you often have the case that very wealthy and high volume market participants have to make ends meet with rather low liquidity markets. This leaves more than enough room for small fish to arbitrate since the price allocation is flawed.