Near my house (Phoenix, AZ) is ASU West. They have a huge solar panel installation on the corner of 51st Avenue and Thunderbird Road. The panels are all mounted on a central axis that runs parallel to the ground, and rotates the panels as the sun goes overhead from east to west (so maximum sunlight is gathered from dawn to dusk); when it gets dark, they reset back to point east for the next day's sun.
For our latitude, a full 2-axis tracker isn't really needed; the benefit of it isn't there, it would take up more room, and hold fewer panels. More complexity, more maintenance, more things to break. There are some people that have them (most are private residences), but I think they got sold a bill (most people just throw them up on their roof facing south - good enough for most).
About the only thing they have to do that is still "manual" is cleaning. They drive a truck slowly up and down the rows, and a guy in the back with a pressure washer sprays them down to knock the dust off.