Tech savvy people choosing proprietary software is so sad.
If you're tech savvy and push for FOSS in your org then you're the one on the hook whenever that SW fails or some coworker gets it to fail because now it's YOUR responsibility. But if MS Office fails than it's not your fault, it's Microsoft's, or Crowdstrike's, or whatever $BIG_CORP you bought it from.
Most people want a chill 9-5 and aren't willing to die on that hill for the sake of pushing FOSS religiousness. Martyrism isn't rewarded. You want something where you can outsource the risk to away from you, so that you can always go home early.
Why do you think Google uses SAP. Do you think they can't develop their own alternative on site? But why bother?