The investors must get a reasonable profit or they will not invest, and the public cannot be well served unless the investors are making reasonable profits.
 Theodore Roosevelt, Theodore Roosevelt; an Autobiography (1913). copy citation

Context

“Let me add, however, with all the emphasis I possess, that this does not mean any failure on my part to recognize the fact that if governmental action places too heavy burdens on railways, it will be impossible for them to operate without doing injustice to somebody. Railways cannot pay proper wages and render proper service unless they make money. The investors must get a reasonable profit or they will not invest, and the public cannot be well served unless the investors are making reasonable profits. There is every reason why rates should not be too high, but they must be sufficiently high to allow the railways to pay good wages. Moreover, when laws like workmen's compensation laws, and the like are passed, it must always be kept in mind by the Legislature that the purpose is to distribute over the whole community a burden that should not be borne only by those least able to bear it—that is, by the injured man or the widow and orphans of the dead man.” source