Open source is open source. To my best knowledge I believe its stealing if you make use of resource an individual or group of people came together to develop an

Open source is open source. To my best knowledge I believe its stealing if you make use of resource an individual or group of people came together to develop and add minor adjustments to it and then put it up for sale. That's stealing. But if you willingly able to contribute back to the community with between 20 - 40% of profit generated from the open source used, is and will be considered fair play.