Is it wrong?
I have got a rather childish desire to go out and buy myself a dot.ninja domain. Just for the amusement of telling people my email address. Is that wrong?
Most of the other domains look pretty pointless. Although I think dot.london, dot.scot and the like will probably do OK.
Part of the problem is the sheer number of them. And that the Registrars don't actually know their customers. So ours have been firing emails at me every other week seemingly, offering ones for digital photographers, plumbers, etc.
The other thinig I can see working is the likes of dot.bank. If they genuinely only allow regulated banks in, have some proper standards, proper security and go through the rigmarole of getting approval from national regulators. Then they might succeed. But they'd have to have some more secure way of finding the domain your after, like a dot.bank only banking search engine. And they'd have to spend lots of money on marketing, to convince customers that for financial stuff they shouldn't search Google, but go to info.bank and go from there. That's quite a lot of hurdles to jump.
You could do the same with a sort of internet approved traders scheme with dot.plumber, dot.electrician etc. But it would have to be much more of an approved operator scheme, than just a domain registry. And that requires proper investment, serious work, and some sort of standards and appeals/ombudsman process. So it's not just a get-rich-quick scheme. I'm not sure the Registrars are up to it.