I once worked on a document management/project management system, the devs were first port of call for the client IT teams.
Boring, right? Non-game changing?
One phone call I got just after it was installed at a 15-20 person business. I'd helped them out with something and asked how the roll-out was going:
Client: "Yeah, it's great, we're loving it. Bit of a problem though..."
Me: "Oh right, well maybe I can help you out, what is it?"
Client: "We don't know what to do with Sue and Bill now, they don't have any work to do. What can we get them doing?"
This boring, non-game changing software had automated roughly 10% of their workforce. Obviously not great for Sue and Bill, but when you put it in those terms the cost savings across all the clients we were serving must have been 10s of millions of pounds. That's millions of pounds to be spent on actually building things instead of just faffing around with admin stuff making sure the subcontractors got the right diagram, or finding out what the site foreman's phone number was.
Even the silliest auto-tweet tagging software means you can do more with less, that's why people buy them.
Almost all software is game changing. Never doubt we are all changing the world. It's just that the low-hanging fruit has already been picked. What Google did back in the 90s is almost laughably simple to what most of us do today. But obviously what they do now is much more complex.