Bitcoin started the transformation of currencies and will continue to gain traction in traditional marketplaces.
As the consumer gains awareness the exploration of altcoins will follow. Then we will see competing digital currencies gaining traction as bitcoin's dominance becomes challenged. It's possible that Bitcoin can maintain it's dominance with the altcoins fighting over second place.
However, I suspect a new winner will eventually emerge and take over the top position.
That's an interesting possibility!
The excitement around large-cap institutional investment in bitcoin makes me wonder if the "bitcoin is digital gold" may end up having some truth to it. Which, if that does turn out to be the case, would probably mean most people will keep hoarding their digital gold in their digital vault, and not spend it with the same velocity. Even when the U.S. had gold coinage, the cheaper silver coinage was used for more of the everyday purchases... Which is probably why Litecoin likes to call itself the silver to bitcoin's gold. Do you think there's any merit to that claim?
Also, there are some alt coins with kinda specific purposes, sorta like namecoin and peercoin... Do you picture a world where different industries or communities favor one coin or another because of its particular characteristics? There are tons of coins and projects I know nothing about yet, which is a big part of what brought me to this forum!