The uphill battle isn’t technical it’s social. The UI is a little less polished, the syntax is slightly different, and Excel has close to 30 years of market recognition. For 99% of excel users LibreOffice Math will absolutely cover their needs 100% with as much time spent figuring it out as they would spend figuring excel out. That last 1% of users however will complain that the syntax changed, they’ll complain that they have to entirely redo the formulas in every one of their old spreadsheets, they’ll feel undervalued and you better believe they’re some of the most valuable people in the company because they learned long ago about working smarter and not harder, plus they know how to automate their work and are therefore much more efficient workers.