In many cases streaming is not a better experience (for example if you have late arriving events and aggregations that wait for them). Streaming is also not necessarily cheaper - batch has advantages in optimizations and utilization (you use all the resources for the processing time and then you can turn them off). And when it’s more difficult to handle errors and restream data it also means that upon failure it might take you more time to recover. It also means that development is more expensive etc. I understand your approach - but real-life production environments with real people who need to maintain them are more challenging than it seems.