Sure initial "per episode investment", but you save the models (physical and CGI files), set pieces, etc and reuse them in future stories to reduce costs later. You definitely can't run a TV Series with completely new Sets, establishing shots, CGI Files, Physical Models, etc every weekI'm not even necessarily saying an action scene every week. But maybe we have some conference scene on a planet like Coruscant and we have some big windows that look out onto the planet and all the buzzing activity there and boom.I did mention the issue of volume up at the top of this page, and I agree - but like I also said, would a Star Wars TV show need to have a 15 minute action sequence every week?
Or to fit the 'bounty hunter' idea, maybe we have a seedy hive of scum and villainy that the bounty hunter's hanging out in, a real cantina environment with a half-dozen seedy-looking CGI aliens skulking about all over the frame.
That kind of thing.
Sure there's nothing wrong with adding something new every week, and it's to be encouraged, reduces costs as the series continues in longevity and makes it more exciting. But, you do need to take advantage of those previously built assets to stretch the budget.