Many people have predicted that we will soon witness the fall of Bitcoin
don't confuse FUD with prediction. and it is not many people, it is a small group who are always spreading FUD and mostly news sites that nowadays have run out of things to publish.
and other cryptocurrencies
this is nothing new. altcoins collapse all the time. you can search for deadcoins on good and see a huge list of them that have already collapsed and died and are dying every day too!
In light of the new developments in technology, is it safe to assume that the sudden interests in immersive technologies is the boost needed to make Bitcoin and other virtual currencies the future of finance?
what sudden interest? i don't see any change. last year we had a spike in "speculators" who were mostly newbies who thought they could become millionaires and this year when altcoins got dumped on them, they left and are still leaving.