"A reasonable question to ask might be, "if wooden jacks are so good then why doesn't everyone use one?"
-they're rubbish for planing down the edges of plywood. The glass hard UF glue used in ply will wear a groove along the sole of a wooden plane in no time. When plywood started to become widely used after the 2nd World War it effectively spelt the end for the wooden jack
-they also wear out faster than a metal plane, in particular you'll often find a small hollow worn into the sole immediately in front of the mouth. The remedy is a patch of harder wood let in and smoothed down, but few people have the skill or patience to do that
-DIY-ers want instant results, so investing the time to learn how to set up and adjust a wooden plane isn't for them
-making the lateral adjustment with hammer taps is often thought of as clumsy and inefficient, that's a bit weird as even on the most expensive Lie Nielsen or Norris I find the lateral adjustment is only good for rough approximate settings, to make a tiny precise lateral adjustment on any plane you'll find experienced woodworkers generally use a light tap from a small hammer, chisel handle, or whatever else is lying on the bench"