Quote from newwurldmn:
Actual businesses can have an edge. These are called economic moats.
They can be lower raw material costs; economy of scale; permits for operations; etc.
AAPL is the largest consumer of DRAM on the planet. They have pricing power no one else has.
There are traders with actual edge, but there are very few of them.
Edges would be: favorable funding rates, access to non-public information, truly superior execution, etc. Only the smartest hedgefunds and banks have these kinds of edge which is why they can make money year in and year out.
Having a system isn't an edge even if it's statistically profitable. A profitable system can beat the fact that you don't have an edge or it can exploit an edge that you have.