Servers don't have/need web browsers (in general). Some on premise compute clusters don't even necesarrily have internet access except SSH from a few trusted us

Servers don't have/need web browsers (in general). Some on premise compute clusters don't even necesarrily have internet access except SSH from a few trusted users and exploits to run code locally would go through them or SSH (at which point you don't need meltdown to access the data). I believe there are valid usecases for not applying these patchws.