Note that Databricks SQL Serverless these days can be provisioned in a few seconds.
That's the point. Our org was told databricks would solve problems we just didn't have. Serverful has some wonderful advantages: simplicity, (ironically) cheaper (than something running just 3-4 hours a day but which costs 10x), familiarity, reliability. Serverless also has advantages, but only if it runs smoothly, doesn't take an eternity to boot, isn't prohibitively expensive, and has little friction before using it - databricks meets 0/4 of those critera, with the additional downside of restrictive SQL due to spark backend, adding unnecessary refactoring/complexity to queries.
> your setup is not really practical to have a lot of people collaborating
Hard disagree. Our methods are simple and time-tested. We use git to share code (100x improvement on databricks' version of git). We share data in a few ways, the most common are by creating a table in a database or in S3. It doesn't have to be a whole lot more complicated.
Are you doing this on EBS? Honest question.