Antonyms for the phrase "cashes in on" include disregards, dismisses, ignores, neglects, abandons and forfeits. These terms suggest the opposite of taking advantage of an opportunity for financial gain; instead, they imply a lack of concern or willingness to miss out on potential benefits. Dismissing such opportunities can lead to missed chances and lost profits, but may also indicate a focus on other priorities, such as ethical considerations or a desire to maintain one's integrity. Ultimately, the choice to pursue or reject an opportunity for financial gain is a personal one based on individual values and goals.