I believe that, it's a cool concept. But I was too nervous to build on top of that feature, I wanted to maintain my ability to leave Neon easily. After Planetscale (and using their version of schema branching) I didn't want to get pinched again when I went to switch (PS vs Neon branching was/is very different).

I think one of the coolest features of neon is being able to quickly spin up new DBs via the API (single tenant DBs) and while that is cool, my client list is small so manually creating the DBs is not a problem (B2B).