This. Enterprise knows the fully baked cost of adding thousands of technologies. My last gig turned a $5k/year payment into about $100k just to avoid learning about MongoDB and the default Azure firewall. Used the same firewall as on prem, loaded up support contracts, kept team lean. It made sense in that context.
Paying someone else to be the Single Wringable Neck when things go wrong is not the same as paying for some binaries.