Modern shops have plenty of air and I'm sure lots of air powered tools. But cordless tools are extremely prevalent in shops. I laugh at the folks who say cordless tools aren't all that. Milwaukee Fuel cordless tools make life so much easier on a job site. In my experience no one uses corded tools on a job site. No cords, no Osha. I've been using a cordless circular saw for cutting Galv pipe for 15 years, same saw, improved batteries from the original ones. Even the older batteries would cut conduit all day. I have a M18 Chainsaw. When I first got it I put it to the test , cutting firewood out of a pile of tree length logs. It would cut for an hour, put another battery in cut for an hour and by that time the original battery was charged again. Now would I cut all my firewood with that saw, no, gas powered saws are more powerful, faster.
I was waiting for Milwaukee to develop a cordless Romex stapler. It finally happened but about 18 months ago I bought a Dewalt cordless Romex stapler as I needed on a couple projects(I normally don't run a bunch of Romex), the thing is awesome. Not only does it save time but it saves wear and tear on the body. I've tried to make it drive a staple thru a cable, its hard to do. It automatically adjusts to depth of whats being stapled and won't over drive a staple.
Milwaukee makes over 100 battery operated tools, I'm sure Dewalt does also. I would only recommend Milwaukee Fuel tools as battery life is longer and more power in a smaller package. Maybe if different in your own shop where you don't have to pack every thing up at the end of the day but doing service on the road, Cordless is much better.