What will make the online roulette to make profit always?

[SlotsMaster]

The online roulette will definitely make profit because I know that the payback percentage will already make them a reasonable profit and there is no way they will not gain on a long-term basis because the percentage that will be given out to the community cannot be 100% . The only thing that will make them run at loss is when they are giving out a 100% to the community.