Then I would argue you're not the target market. I'm a tech company CEO. I have WAY better things to do than set up an IRC server, even though my background is Linux system administration. My employees (we have 8 people currently; hiring #9) also have better things to do (like, you know, features our customers want :)
So we use Hipchat. And Hipchat rocks. Everyone on our team loves it. (We actually tried grove first, but it just wasn't mature enough for our needs--Hipchat has Mac OS, Windows, web, Android, AND iPhone apps, and we're all on different platforms, so that works out well.)
When you're paying developers $$$, you don't want them to be setting up IRC servers. Better to use a Hipchat or a Grove.io and be up and running in 5 minutes with clients on every device. For us, it's well worth the few $ a month to have one less thing to set up and maintain.