I have too much invested in 3.5 to ever abandon it. It IS D&D. If you decide to continue supporting 3.5 I will support your company happily by purchasing your quality products. As it sits I have purchased all 3 pathfinder releases and all of your gamemastery modules.
Also I just need to throw this in, while I appreciate the option of the electronic format and understand it works for some, I prefer a physical book.
There is a substantial market for 3.5ers who want physical books and while it appears WoTC is moving away from both of these for reasons very well explained in your original post... the resulting space could do well for your smaller company.