Diablo3 Latency

I’m just curious is blizzard ever going to fix their Diablo three servers, for a $6.5 billion company they try and tell me to use a third-party vendor. Yet they keep laying off tec teams across the world. Of course this would make sense if the tech teams can’t fix an issue with $6.5 billion of annual income. But any other games under blizzard appears to work fine I can run World of Warcraft on ultra. I don’t have any issues with that game. So obviously some of the tech teams and programmers know what they’re doing just not the Diablo branch.