Around this same time frame, there were at least three different types of mechanical presses to obtain olive oil, but the only way they could press grapes was to have people stamp them with their nasty, crusty feet?
Maybe the business owner didn’t want to make the capital investment. They’ve excavated a mechanical grape-pressing facility in Pompeii, I believe, from a few hundred years later, but Romans got a lot of processes going on a larger scale than was being done in the Levant.