Synonyms for Profitableness (same or very similar meaning)
WordNet sense 1 (the quality of being encouraging or promising of a successful outcome):
positiveness, advantageousness, favorableness, favourableness, positivityWordNet sense 2 (the quality of affording gain or benefit or profit):
lucrativeness, profitability, gainfulnessFrom the ODE community, based on WordNetadd/edit