Why is demonstrating the value of Enterprise Architecture difficult?

Enterprise Architecture (EA) benefits are often indirect and typically unfold gradually over an extended period of time, making it quite challenging to calculate a clear and immediate return on investment (ROI) in a straightforward manner. Because these advantages develop slowly and are not always directly measurable in strict financial terms, quantifying the immediate monetary gains becomes increasingly difficult. This lack of clear and straightforward financial evidence frequently leads to skepticism and doubt among business leaders, who may question the tangible value and practical impact of EA initiatives on their organizations, often wondering whether the investment is justified given the delayed and intangible nature of the benefits involved.