If I recall, you're playing 4e? I'm not the one in charge of the business decisions, but my sense is that PF1 sales are way down, and 4e sales are basically zero, so the cost of conversion and a second layout pass might not be worth it, especially since the layout guy wouldn't be working on other books that are in the pipeline. Maybe if twenty or so folks spoke up and said they'd buy a 4e version, that would be a sign it's worth the investment.