Is HIDE OR DIE a threat to Dead By Daylight?

I wouldn't call it a threat, but more of a very slight competitor. It has its own variation on asymmetrical horror, similar in a way to how Deciet has multiple killers that have to work together to win, Hide or Die is more of a battle royale version of the one killer/multiple survivors format (based on what I've seen). DBD is unique in the way it's game plays out. Just like Hide or Die is unique in that sense too. But this is my take on the design aspect on it. It also not being able to retain a player base shows that it isn't a strong competitor or even a "Killer" of DBD like you describe it.

Overwatch was supposed to "Kill" TF2, but it didn't for similar reasons.

I think @SpaceCoconut covers the more technical aspects better than I could.

And @Xboned makes some relevant points: that it isn't on console, which is a big factor for quite a few players (myself included), and that not everyone wants to play both roles (because if you are bad at one role, and are still forced to play it, even if you are not having fun, you can't have a chance to play the part you are good at... at least if you are good at killer).

Survivor seems very weak, since they have limited stealth options and ways to temporarily stop the killer.

And, to me, the designs of the killers don't really make sense to me. Why aren't killers variations of survivors due to the only difference between them being that darkness consumes them? Why do survivors become completely random people when they become killers? What is the darkness in this game? At least the Fog, the Entity, and the Realm are semi-explained in DBD as partially lovecraftian concepts. All Characters (killers and survivors) in DBD make sense, and the gameplay elements work (maybe not as well as they should in some situations, but that's neither here nor there).

Based on what I've read from your responses, you seem more intent on pushing any criticism underground while only taking what you want from it. Like when you responded to @The_Manlet. They were talking about how the game made no impact, less so than Last Year. You somehow pull out the idea that Last Year did badly and that HOD is going to surpass them, which as @SpaceCoconut pointed out, is pretty hard when a game's population is 0.

You also described @Xboned's real criticism as sarcasm, which he genuinely wasn't being from reading his post.

But... that could be misinterpretation on my part. Please prove me wrong about you.