What is the ruling on investing in satellite channels, most of which are pornographic and attack religion, while an Islamic channel is established under the principle of "good deeds efface evil deeds"? And does that remove the declaration of sins, persistence in them, and their dissemination?

If the majority of a group's channels disseminate indecency, then subscribing to them is forbidden (haram (definition)), and the investor in them is considered to be delegated to manage and spread evil. Launching an Islamic channel does not absolve one of responsibility for the other corrupt channels. The religious duty is to repent by ceasing the sin, then to increase in acts of obedience, including launching channels that promote virtue. The claim that the good deeds of the Islamic channel atone for the sins of the other channels is a deception from Iblis, for major sins require specific repentance. Broadcasting channels of nudity and dancing is among the major sins, and those who have influence over them should remember that they are participants in every evil that arises from them, and that the sin will accrue to them even after their death.