You asked what enterprise software. You don’t just get to act like those aren’t being used in almost every enterprise on the planet. I don’t care if they’re crap companies or not. They could literally be literally run by Nazis. As it is right now I ask you to find a single enterprise company that doesn’t have either of those in use on their systems somewhere. And I’m not sure what you’re talking about in regards to “studios”.
In regards to LibreOffice or excel alternatives not being good enough I can tell you they aren’t. Using Drools rules, software written by Red Hat, you are unable to create drools decision tables that work properly with Kogito (another software written by red hat) with anything other than Excel. That includes LibreOffice and OpenOffice.
Drools is the most used rule engine on the planet. Software devs use it, business stakeholders use it. Excel is an absolute necessity if you’re using the decision table functionality of drools.