Tell that to the people at Paizo - they seem to be doing just fine with sticking to print.
Note well that Paizo are *not* sticking to print. They have quite a few PDFs now!

It's also very hard to say "Paizo are doing well" and assuming Wizards can do the same, if just due to their difference in size (not necessarily the size of product runs, but certainly of the organisation).
(I'm curious as to whether Paizo could do the D&D boardgames itself if it wanted to...)
Cheers!