It's between speed vs. decentralization. Which coin will be adopted by most? Many say it's in the top 20 already we have still decided what we're going to use as THE PROTOCOL coin. Educated opinions welcomed.
Agree that adoption will be the main aspect for success in five years. By that time, alts without success in that area, and all the so-called utility tokens that will never be used, will slowly begin to fade. And this is why the ones like Bitcoin will succeed where others struggle, the one crypto that is gaining adoption and intended use, even with all the FUD going on. If alts like Litecoin also succeed in getting their own network of accepting merchants, then they stand a chance too (and I believe Monero will be one of the few).