Technology adoption delays

The first time I used github's "paste an image in a text area by just doing Cmd-V" feature I was hooked.
I mean what was obvious before in every wordprocessor took definitely a long time to arrive in a web browser context. Even gmail tooks its time - for while pasting a picture in the message box was not working ,was working differently than attachement ... it was a bit confusing etc..
But with github's editor everything made sense. After that I started expecting to find in all other places
be it in evernote, in my blogger edit message, in oD job post, everywhere.
And everytime I was annoyed that who ever was the author of the sw I was using didn't do what github did:
[! uploading image ]]
.....
[

So simple, using the editor normal text to provide a progress indicator, upload thge picture somewhere, create an unguessable url to it and then do whatever would have been the natural thing to do to display in the text a picture that is available online via a url...

That approach would definitely work for blogger and oD job post/messages..

That approach may not have worked for evernote and gmail (the images in this case should have become message attachments).

Anyway my key question is why it takes so much time for a simple innovation

(there is both a product functionality innovation and an implementation innovation in this case) takes so long to spread:

- The authors of one system isn't exposed to the other system

- The features of one system (e.g. blogger) are decided by a pm - pms aren't using github. The people that use github (e.g. programmers) aren't in charge of making product decisions in their normal (non-github) life as programmers working for some company.

- People like web designers are trained in a mode of "I see all the services I use, anytime I see an interesting effect, font, ui thingy, I check it out, figure out how to do it, often link it up in my blog - to make sure that I do the same thing soon... somewhere. In that sense contrary to "programmers" "designers" are users and decision makers for whatever they do and that allows "design" innovation to spread more rapidly than developer-innovation.

- While most things are reverse-engineerable in web design... thats not the case with anything that requires server side functionality. This is probably the case with the "paste an image feature" - is the code for doing that available publicly? probably not (checking it out.. looking for something similar to http://techcrunch.com/2013/01/02/github-replaces-copy-and-paste-with-zeroclipboard/)

(after writing all this I went to catchup the blog of my friend gl and then read this post (from a month ago..)
http://realgl.blogspot.gr/2013/05/omg.html . The funny think is that I think I am the "friend" mentioned that said "oh yeahh... its been around for years" (I actually think that github's paste is fresh.. gmail's is older...)