Well there's two potential scenarios for this:
1. Cryptocurrencies continue soaring exponentially, and this goal is reached within a year.
2. This ends up similar to the 2013 bubble, and this goal is reached after about 3-4 years after cryptocurrencies have recovered.
The higher the predictions start getting, the more likely it is that this is a bubble.
Though honestly the current situation is a LOT different than the Nov 2013 bubble. For one, a big reason, probably the main reason, why bitcoin crashed all the way to $200 over the course of a year, and took a total of two years to start building back up again, was Mt Gox. A lot of people lost their money and it seriously damaged the reputation of bitcoin, basically it destroyed all momentum. I think we very likely would have had much less of a deflated price and a far shorter doldrum after the 2013 bubble if there was no Mt Gox crash.
The situation now is that crypto is an order of magnitude larger than it was then, there is much greater adoption around the world, not just China leading the way, bitcoin is a legal currency in Japan, and investors are just starting to get involved as well. There is very strong momentum upwards with very strong support for bitcoin and the crypto market in general now. There will be ups and downs for sure, but I don't see a bear market at any point in the near future lasting more than a few months, and expect bitcoin to be mostly bull-ish for the next several years.
So definitely #1 of your two scenarios.