Serialization doesn't mean eternal serialization. Mini series exist. I'm currently watching the 80s Shogun adaptation. That thing aired originally as a 5 part mini (VHS) covering each of the 5 volumes of the original book, but TV syndication usually broke it into 30 minutes chunks (it does have some nice natural points of fade to black every that often). The version I have is 3 blu-rays but the whole thing paces like a 10 hour movie. Who cares, it's the same story, it has a start and an end, and several breakpoints you can choose. Even the concept of perpetual TV presence with endless seasons is stupid and makes no sense in a world of video on demand. It continues to exist because production pipelines are still designed to work in seasons. But the important part should be to tell a story and tell it well in the time frame it takes.