Interesting thoughts
However you have to realize you're looking at GTLDs from an investor standpoint and expecting a return like liquid domain names in the bracket of LLLL.com, LLL.com, LL.com and the same goes for numerical domains.
The problem is and most people aren't aware is there are some extremely wealthy people in the domain industry and buying these names and pumping the hype up is what creates a pandemic and market crash.
GTLDs are not based on a market ... They don't have definitive price points and they are most certainly not for everyone. As the Internet world continue to grow though; GTLDs will become an equally more advanced part of the Internet ! And recent sales start to speak for themselves.
Hanes just purchased a GTLD for $30K yet we hear people arguing about UDRPs for regular old generic domains.
And see here's another problem. You only see the market for what it is. I won't speak out of term but I represent some very very expensive domains and I've managed to communicate with companies like Microsoft and HTC and these companies spend billions upon billions of dollars. Yet they can't afford to write a check for some domain name that could mean potential traffic to them. Truth be told, there exact reply was "well GTLDs are the new coming event in the Internet world" !!! -not my words
Won't say names but one of the Executives Microsoft told me this at the same time they bought LinkedIn for $26B ?!

I'm dying
The major point here is GTLDs are not to be controlled by market value or appreciation. It's just more space for the Internet world and a brand new condo in Newyork with a Central Park view is just as nice as the town home in Manhattan

of course one has more character but it's all a matter of opinion.
My true opinion - you're then welcome to disagree as that's your opinion. But be cautious, everyone called the Kings of this industry crazy for investing in names and that was just 20 years ago ?! What will happen in another 20 years ?!