I have seen this same argument made with .co, some of my best sales were made to companies upgrading from .co, and .io after they executed their business plan, to their .com.
It takes time for the industry to merge. This has no bearing with trading cryptocurrency, most of those altcoins are pump and dump crap. For a coin to have any true value it has to perform a function with a set user base, not simply day trade to a bunch of tweens who dream of private jets, and exotic trips. Most people who trade will probably lose their shirt, in panic sell offs.
It is what is happening behind the scenes companies are entering the space to provide new ideas, services, and jobs, the investment will back this, as the trend is there, that is where many of the better domains should find homes. This is by no means a overnight grand slam, but guys like CryptoRate, CryptoWorld, LoveCoin etc... are already experiencing some of these gains. It is a spillover effect, goes hand in hand.
Many of these people are tech buffs, and will spend that money to buy a blog name or whatever, I had a guy last week, within the course of 30 minutes, his opening offer was $4K, he just wanted a cool tech name for a blog, .com, countered at $5K, he accepted paid, done. Looking him up young 20 something, bitcoin visionary guy for a few years. This is a spill over of new found wealth. Domainers will see some of it. So many aspects of domains will do well when the stock market is doing well, companies are spending more, technologies are emerging, we are kind of in this perfect storm, and if you have the domains you will do well.
As for Viacoin.com it is owned by an end user.