I think for now, maybe it has... maybe another 2-3, then it should stop. (you don't know how much it pained me to say that, lmao!)
But I also think if it stops, it should definitely come back in like 10 years. There's just no way it can stop forever... it's a TV phenomenon!!
If they keep it going for a few years, people are gonna get bored... so if they bring it to a stop, people will forget about it for a few years, and when it comes back, it'll be just amazing. Everybody'll remember it, and the build-up will be huge. That's what I think, anyway.
But another 2-3 series' couldn't hurt.
I'll keep on watching it whatever happens, hehe.