Need to understand how these names have been priced, the aftermarket really isn't particularly profitable by design. Verisign has tried as much as possible to keep the profits for itself in the primary market, so the extension becoming popular and speculators making money are two quite different things. I think if .tv were twice as popular as it were today speculators still wouldn't be making much from it.
With the premium names (and non premiums to a smaller degree) it is a bit like trying to make money in property be renting a house and releasing it, as opposed to buying it, it isn't going to work most of the time.