Eh you don’t even need to go through all the trouble building a startup. imo Neon was interesting and filled a niche while open source solutions were really gaining maturity and adoption. Now they have, lots and lots of recommendations in this comment section, so my sense is that building a startup would be like reinventing the Neon wheel, just too late. Perhaps, depending on licensing, running OSS as a software is viable.

Oh, my startup isn't about Postgres, but rather a GPU-accelerated Spark: https://news.ycombinator.com/item?id=43964505

What are some bad UX choices you generally dislike in data products?

If you come up with the answers to some of these questions, I'd definitely read those blog articles on how you came to those conclusions. Keep asking interesting questions! Cheers

Which questions are you referring to specifically?