Not sure I would call it a "bribe" when they are forced to have it as part of their contracts if they want partner. Don't think there is a contract without ads, and then one contract with ads but for more money.
Though some have to do more than others, but not sure if that is due to old contracts or more viewership. 6 minutes is the number I hear from 1k+ streamers. Most just do that in bulk.
Not sure if Norway pulled all the ads from Twtich. Since there were so few of them, a lot of the time (bout a year back), if ads ran, I could get the same ad 3 times in a row. But even if the localized ads are gone, the strange thing is that ads from Amazon are gone too. The ads that showcased a new show or somesuch when clicking on new channels. That is gone too. Not seen an ad for ... a year?