It's already been $1K and dreams about $5K -$10K are a perfectly rational place for price to be driven up on the next ATH rally, if only due to speculators/traders who are along for the usual ATH ride. Whether it stays there is another story.
It's been when there was a flux of money from China that is now shut by PBOC and when there was so-called willybot. When and only when.
There will always be some 'excuse' that the speculators will have for the next rally: Some country doing capital flight, some exchange misbehaving, gox coming back, Mark Zuckerberg is going all in, something. Just wait for it.