New gTLDs are babies. Do you teach 1~2 years old baby to run?
Good point. Yet I am not saying you just have to be patient, because I think they are not going to appreciate a lot over time. However, domainers are often impatient, they want to flip within the first year and not keep the names for ten years.
There is not enough consumer awareness right now, and believe me it will take time... more than most people imagine.
There has to be a primary market before a secondary market can take shape. But since the supply is so huge vs the limited demand, it doesn't make sense to stock up heavily on gTLDs when end users have so much choice and they can very easily bypass the domainer.
The only thing you can do is try to identify the possible future winners, because some extensions will be more popular than others. Example: .club, maybe .online - I don't know.
But in order to make a sale in a new extension you have to own a name that is a bit special. Very few will be aftermarket-worthy.
It's true, a few big sales took place.
Who makes them ? The registry, almost always.
The sales are not representative and essentially amount to a mirage.
The best way to invest in new extensions may very well be to be a shareholder in a registry. Be at the top of the food chain.
#foolsgold