As a consumer I want less people between me and the actual producer of the work so another intermediary going out of business bothers me not at all.
My ideal world is that I buy a novel direct from an author, perhaps paying a small commission to a single intermediary. Author to publisher to iFlow to Apple to me isn't efficient.
Yes there is an issue here with how Apple and the publishers behave but there is also a significant issue with how much value iFlow were adding in exchange for their cut. A slightly different (maybe better) reader simply isn't worth the 30% they seem to be planning on.