With current technology, can't they even display the number of moves alongside the time?
Vtek 300 does that.
It's down to the players to keep track of how many moves they've made. Having the clock displaying the number of moves made is tantamount to outside aid to the players, like asking the arbiter how many moves have been completed or whether you've made the time control (a question s/he would refuse to answer point blank). Furthermore, if you're not using an electronic board you can just hit the button a couple of times and, hey presto, you've come a couple of moves closer to the time control - there's no way of proving that both players haven't forgotten to note those missing moves down.
Now if DGT was to discontinue its NA and 2010 models and sell the 3000 in the $40-50 dollar range like the current NA prices are, and then offer them in a variety of colors like ZMF does , they would probably dominate the market and it would be the most common clock by far at all tournaments worldwide for the next two decades.
They currently come in two colors, maroon and wood grain and are available for about $60 on Amazon. It doesn’t seem too far of stretch to me, for DGT to make this 3000 model ubiquitous through out the chess world as well as other board game societies such as go, backgammon, checkers, and Scrabble.