Its inevitable. Once mainstream adoption of crypto starts to shift people out of fiat and into crypto, the money is going to start rolling in. The thing is, who knows how long this shift could take? We could see a 10 trillion market cap by 2019 or it could take 10+ years. Who knows?
Regardless, anyone who isn't in crypto today will be kicking themselves once it gains mainstream adoption. I hate thinking about the fact that I was aware of Bitcoin when it was around $1, I had disposable income, and I never bought ANY. Hindsight though, right?