I think bitcoin price (2018 or further) is a different conversation than financial institutions restricting deposits into the cryptocurrency market under the premise that it is a security risk. But, to your question, I think the overall cryptocurrency market continues to see substantial growth in 2018 and bitcoin has the first-to-market advantage. Bitcoin is the most well-known cryptocurrency, but as more people become educated about the other technologies available, I see Bitcoin continuing to lose market share of the overall cryptocurrency market.
RE: Australian banks blocking deposits to cryptocurrency exchanges!