We think the OSS approach is crucial to a good ELT solution. One reason for that is that any managed solution can only support some subset of the connectors that exist in the world. New sources of data are being created everyday.

A common problem that we here from users of SaaS ELT is that some of the niche connectors they want are not available so they need to maintain some separate data pipeline to handle ingesting them, which defrays the value of paying for a SaaS solution at all.

With an OSS approach you can always build your own connector for niche sources and have them run through exactly the same set of pipes as the rest of your data.

Our bet is in the long run, you end up ahead in terms of the engineering maintenance cost by having one system that is flexible enough to handle ELT for all of your connectors as opposed to having to manage a SaaS offering and set of custom connectors that you have to manage yourself.

Anyway, happy to answer other questions, but that's how I think through this.