Domain investors who have been in the game for a long time have amassed a large portfolio of .com / .net / org domains and in the past were in a comfort zone and could dictate or demand their prices because if the domain was taken in a .com/.net/.org/.info /cctld then that was it...
Comfort zone is certainly a factor, but investors like to diversify and explore new opportunities. Just because you made money on .com, doesn't mean you can't see opportunities elsewhere. Frank Shilling is testimony to that. But of course he is in a very special position on top of the food chain.
I am not saying you can't make money on new extensions, but my personal determination is that the risk/reward ratio is not worth it for me. At some point speculation becomes gambling when the odds of a sale are too remote.
The introduction of nGTLD's has taken away this comfort zone, no longer are people forced to pay whatever price the seller demands...They have something that they never had before... OPTIONS!..
People have always had options, even before new extensions were released. Some projects were set up on .io .co .me etc
In theory, more extensions = more options, but in practice there are not so many more viable options available. Because a lot of extensions are only suitable in a narrow niche. If you are in financial services for example, .xyz .club .tech .hiv .vin .desi .horse .auto etc are useless. Only the more generic extensions or those related to your industry can be possible options.
So, just because we now have hundreds of new extensions, doesn't mean we also have hundreds of new options available, not at all. There is more choice but not as much as people think.
they have the option of a few good nTLD's at a much much lower price than the .com equivalent.
As long as their choice of domain is not reserved, is not hoarded by the registry or a domainer, and is not premium-priced... Reality is quite different, as everyone has realized.
Registries are behaving like domainers, pursue adverse pricing policies and are not always acting in a predictable manner (desperation ?). Some registries are taking back dropped domains into the pool of reserved domains. Those names are not going to benefit end users if they aren't available.
What the registries are doing is send end users back to square one. If you can't get a name in a new extension or need to buy it at a premium, and possibly pay expensive renewal fees, then why bother ? Never mind that the stated purpose of new extensions was to avoid this situation right ?
This is the reason they need to constantly protect their portfolios by putting down nGTLD's.
As if end users were consulting domainers before choosing their domain names...
Personally I have noticed that people who invested heavily in new gTLDs are sometimes defensive. When you criticize new extensions , it's because you are 'trying to protect interests' and you are a hater (or a dinosaur stuck in the past), you cannot be objective and your opinion doesn't count. I can understand their distress when they hold large portfolios with expensive renewal fees and zero sales
From the perspective of an end user, new extensions can have benefits (if you can get a suitable domain for a moderate fee). From the perspective of a domainer it's another story.
TL;DR version: new extensions haven't made much progress in 3+ years. I think they will always remain marginal oddities due to lack of critical mass, low profile vs the accumulated mass of old extensions.