Sentence:  Examples are in public utilities , making military aircraft and accessories , or where the investment and risk for a proprietorship would <WSD>be</WSD> too great for a much needed project impossible to achieve by any means other than the corporate form , e. g. constructing major airports or dams . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)