Earlier quoted context omitted.
Discord is as valuable to the gaming community as IRC was, or as Ventrilo was, or as Skype was (for a while). In other words, not very (as all those tools were easily replaced). Twitch built a marketplace of creators and consumers (like YouTube) -- that's why it's hard to replace. Discord, on the other hand, is a chat program.
I disagree (to a degree) . Everyone i know kicked and screamed about switching from Vent/Teamspeak/Mumble. I feel like it eventually dominated not because it was easy to dump existing solutions, but because existing solutions were poorly designed by comparison. No mobile, horrid chat, required install, poor voip quality. Discord came along with a better offering and it still was a tough switch. With that said, i agre…
Discord "won" because it's literally burning cash and offering a service for free (for example, I don't have to pay for a t2.micro instance to host a Mumble server). But this is obviously not sustainable.
If you're selling a dollar for fifty cents, it's not hard to find a market.