No one has a clue. Anyone who claims to has an agenda or is a bit special.
This.
Funny thing about 'no regulation' in bitcoin is that you'll see a lot of people making claims for/against bitcoin without disclosing their vested interest. For the stock market, generally sites with some large online presence or readership will declare if an article has opinion and whether they agree/disagree. They'll also state whether they have any vested interested in the stock/company as part of the general disclosure.
With bitcoin, you simply don't know if the person saying 'to the moon' is a bag holder who bought at $700 or if they're an early adopter. You don't know if the people spreading FUD are shorting, and so on (although a lot of people will make assumptions). A few weeks ago, CoinDesk posted an interview with Tim Draper where he stated that he thinks bitcoin is 'still going up to 10k per coin' despite the recent price drop. Well no shit, Tim Draper bought 30,000 bitcoins at roughly $600/each, he's lost about $10 million from his net worth, of course he's going to be talking up bitcoin to encourage buyers. That piece should have been labeled an advertisement.
So, with that said, I think these long-term predictions are silly. No one truly knows. And be wary of the people who claim to predictive long-term prices. Personally, I think at the current price levels holding long-term is silly. Back in the early days it made sense because parting ways with $500 for 10k coins was a laughable amount of money you could piss away and not care about... But now, 10k coins is the cost of a house. Holding from $380 hoping for $1000 in some arbitrary future time is not a really big enough gain to rationalize the risk of losing out on the opportunity cost of investing that money elsewhere.
People who buy 30k bitcoinns will always try to encourage buyers to buy more bitcoins so they can make the most money out of it. But I was thinking of people who are not owning 30k bitcoins, what their predictions are. But as we know, its hard to predict the bitcoin price for the future, but we could always guess.
It's does sound more reasonable for me to predict that the BTC price would go up to $1k by the end of this year, than saying it would go up to $5k. How ever, it could go up to a lot of money, and in the end, thats what all bitcoin owners want.