I have been surprised that dev registrations have taken off as fast as they are. I think they are slightly but only slightly behind the .app corresponding point.
I agree entirely with your point below
@DomainGuy1
I think they have done a good job with this (as they did with both .page and .app). Authentic big name websites up and running at time of general availability. In
my article on the .dev launch (written a bit ago during EAP) I have links to some of sites
already up and running including big names like GitHub, YCombinator, Mozilla, Slack, Stripe and others.
I suspect that these contribute heavily to the rather amazing fact that
just barely into general availability the TLD already has 49 working websites in the Alexa 1M.
I am also a little surprised that they sold a few in EAP even at big prices.
Apparently both bitcoin and blockchain sold for $22,000 each (plus hefty renewals I presume).
I think that ultimately the secure space requirement and security pre-launch will be an attractive feature. Others will either emulate it, or Google will have an advantage over other extensions. With the dominance of Chrome they can influence the market pretty substantially re security requirements.
I am not sure about the beta state but it seemed to me it is working out very well for them. I spent a few hours at the site testing different names to see about premium renewals as background for my article of a few days ago and it was fast, easy to use. I see
from Andrew at DNWire that
Google has now moved up to be one of the top 10 registrars for .com (about 1.4 million under registration) and clearly they are dominating sales of their own new extensions like .dev.
I agree with
@JB Lions on this point. I think if most .dev sites will mainly be used by technical experts and it's overall impact will not be as great in the eyes of the general public. Now I admit I could be wrong on this (as I was on early registration popularity, and well many other things

). Google place no restrictions on the type of use.
Development is of course a popular term in ways that have nothing to do with computers - e.g. social development, economic development, resources, infrastructure, etc. If it became popular in those areas, helped along by the secure pre-load and the Google name, maybe it will get public known (see my ps below re this).
Sorry to write on at such length. Lots to consider on this one.
Bob
PS In checking I see that blockchain.dev redirects to an existing site that seems devoted to economic justice, so it seems that the broader sense of development is already in use in one of the larger purchases.