The word "inclusive" only occurs once on pages 1-164 of the fourth edition of Alcohlics Anonymous and does not occur in Twelve Steps and Twelve Traditions. Here is the immediate context of the language to which you were referring on page 46 of Alcoholics Anonymous, 4th ed. :
“We found that God does not make too hard terms with those who seek Him. To us, the Realm of Spirit is broad, roomy, all inclusive; never exclusive or forbidding to those who earnestly seek.”
The writer(s) of the Big Book state in that quote that it is "the Realm of Spirit" that is "all inclusive; never exclusive . . ." And the writer(s) are talking about "those who seek Him [i.e., God]"
Dick B.'s son, Ken