Profit is fine, it allows a good idea or business model to start small and grow organically to fit the need that it fulfills. The trouble begins with accumulation of capital, which is of course a core tenet of Capitalism. Beyond enough that you can reasonably expect to be fed and sheltered for the rest of your natural life, any further accumulation is antithetical to a good society. We can have currency, competitive markets, and free exchange of wealth for goods and services (for some industries, not all), but a line must be drawn at how much wealth any one person can be allowed to control.