How do I convince my workplace we need SQL databases?

I work for a GIS company and our tools have not grown with our projects and client base. We use ArcPro personal geo databases (GDBs) for ALL data. We recently had a project where shit really hit the fan, one major issue was related to invalid values from poor version control. Everything uses personal GDBs and is just "version controlled" by dating filenames in Explorer. It would have been trivial to fix in a proper database. We also have operational constraints, like we can only have one person doing X job at a time since all the data for X job is in a personal GDB.

But I'm just an analyst. I've garnered some attention for my technical expertise beyond processing the data. PostGIS is a thing so it isn't as though we'd be recreating the wheel. How can I push for that sort of change? I'm thinking I can sell it using how much we lost on this project because of these avoidable failures. I'm also wondering if I can make this an opportunity to create a "database administrator" position for myself