The concept of profit itself means you are beating the market by taking advantage of someone else or extracting value through arbitrage. In a perfectly competitive market with zero barriers to entry, profit margins will converge on zero as new entrants capture market share or competitors leave overcrowded markets.
Edit: this is classical economic philosophy, not my personal opinion
Edit: this is classical economic philosophy, not my personal opinion
https://en.m.wikipedia.org/wiki/Profit_(economics)