Dunno, how can you say that for sure when we don't actually know how to make a practical quantum processor? The bigger issue is that we are scaling up manufacturing of approaches that have not been made to work.
I remember a meeting where the project manager pointed out that we were due to send some test boards to a customer. I pointed out that we didn't have a design yet. The PM then asked why we couldn't send them some boards anyway. I suggested that since the boards wouldn't work that we could just cut out some green cardboard and add some component shapes with a magic marker thus saving significant time and effort.
It turned out that I was not as funny as I thought I was...