Start with who is they? Ie: what channels are you watching? The channels I watch on Roku don’t have commercials, so one obvious answer to try some others.
But if you do watch commercial TV, then the advertiser is the customer, (you are “the product”) and whoever shows up with money gets their commercial shown. There used to be a thing called “The Fairness Doctrine” in the US that required balanced coverage of controversial issues, but I don’t think that included commercials, and it ended in 1987. (If it still existed, it probably wouldn’t have been updated yet to cover streaming, just like many other old broadcast TV rules.)
Perhaps you’d like to buy some commercial slots?
Banned but back. Because why not?