A monthly book?
Seriously, most of the time they couldn't manage bimonthly.
There seems to be a mistaken impression that retailers were reluctant to stock the book because of content. Not so. I remember seeing some pretty poor quality books in my local comic book store back then. Dealers were reluctant to carry a lot of the "independent" comics because of too many publishing delays. And, unless the store had a large display, stores were more likely to use that space for product that actually sold. Some comics were returnable if they were left unsold. Some were not. If a store ordered 20 copies and sold two, they were stuck with the inventory and out the money that they paid upfront.
Some stores would special order stuff. Some would not. The distributor sometimes placed a minimum of copies that could be ordered. No problem with Batman or Spiderman but quite another matter of a title like DS.
And, Innovation was not paying its bills, that's a very good reason for people not to want to do business with them.