I just noticed on the Webtoons app, if you read their featured comics, you get prompted video ads, app ads, etc. on top of the banner ads at the end of the comics.
Maybe the ad revenue on Webtoons will be a lot better compare to Tapas. But we shall see! I'm excited to see how this will turn out.
PS: The ads can be annoying but that's the price you pay for free content.