Yes, i do work in the industry, and it does suck for pretty much of the web. Try supporting firefox on users that don’t know how things work, see how many calls you get “This webpage wont work, this application doesnt work”.
Ok, it may not be the target of security problems, since it is not as widely used… it is not widely used because it’s useless for so many reasons. If there was more support for it, and it was more compatible for the web, it would be great. But its not.