Thats definately a possibe scenario but everyone can paint one look at the comments, and none of us can acount for the variables, like lets say an entity picks up all these miners, doesn't mean the energy is available at a reasonable cost to go out and attack the network 



TheBTCManual

There's external risks to miners quitting. ASICS are a limiting factor in terms of entering the mining arena, and if a significant amount of miners failed around the same time, it could be scooped up by a state-actor to gain a temporary majority of the hashrate. I believe Bitcoin wouldn't die from this, assuming new miners would spin up to challenge this eventually, but I think it could definitely hurt Bitcoin in the short-term and slow adoption.

netstatic

bitcoin

Tail Emissions Are A Terrible Idea

josh

I totally disagree, saving incompetent miners is not everyone's task, if miners can't make money, they should quit mining and let more efficient ones mine.

According to my guess, this is actually a problem with BCH. After the next round of halving, BCH may enter a mining death spiral.

So they hope that Bitcoin will be tail emission first, so that BCH can follow.
