Ian Balina - I think this character needs no introduction 
"Over the next 5 years, Bitcoin will reach a global scale of adoption. Innovation will continue to push developers to create mainstream applications. Within five years from now someone from around the world will use Bitcoin or other cryptocurrencies in apps like Paypal and Venmo to pay someone. Speculating on price, I think 1 BTC will be over a million within 5 years. The early adopters of Bitcoin will be filthy rich. There will be many more countries where Bitcoin is accepted as an official form of payment. This will also potentially bring more stability to countries that have traditionally unstable currencies. The population will be more confident in a real store of value, not just an inflationary fiat from their government."

Hm.... Sound good, but...

I don't think this guy should be considered as Bitcoin expert, he does have a lot of followers and his portfolio (if the blockfolio screen-shots are real) is growing but He does not have any relevance or background in Bitcoin.  IMHO.

He such a bullshit person who holded 80 percent of the ripple in his hand itself and he is saying new competitors are there in the market means that looks so funny in my view. Whatever the project comes to the market everything behinds bitcoin only.
Ethereum are boss for all the altcoins in the market bro. Please ignore project like RIPPLE for sure since they completely relevant to the banking side.

Observers are divided, some consider this to be good: as an advance, others consider the trend to be short-lived. Commonly referred to as Bitcoin Bubble-a commodity price state soared to form a bubble, which is feared to break at any time.

Patrick Gray, CEO of HashChain Technology
We haven’t seen anything like Bitcoin since the dot.com boom. But unlike that bubble, there’s every reason to believe that Bitcoin can sustain growth in the coming years due to several factors. First, crypto is going mainstream, attracting a wider audience that ranges from middle class Americans using it to purchase goods to emerging economy citizens hedging against runaway inflation; Second, major exchanges like CME, CFE and NASDAQ are (or will be) running futures in Bitcoin which will invite more institutional dollars and further legitimize the currency. Lastly, blockchain is poised to disrupt a number of industries, and as people get more comfortable with the technology, there will be growing acceptance.

Rebecca Devaney, CEO, Hunter Creative Labs
For Bitcoin to survive in 5 years, its early adopters will have to be loyal in the face of increasing innovation speed and diversity. In addition to the reality of ‘new coins’ — 1500 at last count — there will be two major technological developments that will revolutionize cryptocurrency over the next 5 years.

The first development is quantum computing, which was first mentioned by the Nobel Prizewinning Physicist, Richard Feynman, in 1981. Feynman asked why we would build binary computers — based on 1s and 0s — when we could create a computer 100M times faster by utilizing algorithms. Fast forward 26 years. By 2018, Google will achieve quantum supremacy, which means they will have created a ‘quantum’ computer faster than the best ‘classical’ computer. Metaphorically, classical computing to quantum computing is the equivalent of running to flying. To extend, Blockchain is like running a relay — its value is in the interdependence of the runners. It’s still not ‘flying.’ To survive, Bitcoin will have to become a quantum system based on physics.

The second technological development is Artificial Intelligence; our “biggest existential threat” according to Elon Musk. Currently, there is a facial-recognition software in Russia whose creators no longer understand how it works. Similarly, a chess AI in Japan — no idea how it ‘wins.’ As science fiction becomes reality, we will have to set universal ethical/regulatory standards for how AI manifests. Check out Asimov’s laws. Bitcoin will become mindfully iterative AI.

Quantum and AI aside, the true value of cryptocurrency stays the same. In five years, Bitcoin will ONLY maintain market share because it serves the populace and democracy. The worth of decentralized currency has now been proven, but Bitcoin being the future ‘gold standard’ of decentralized currency remains an unknown. Go Bitcoin go!

I'm not expert when it comes to bitcoins so I do not know those predictions. but according to my search the predictions that experts say when it comes to bitcoin. Spiros Margaris has more than 20 years of national and international experience in investment management/research for family offices, UHNWIs, HNWIs, institutional clients and innovation and technology management.

Yep!
And! ) There are now countless 'experts' (lol) too