Under the regime of investment and business enterprise these and the like differential benefits may turn to the business advantage of a given class, group, or concern, and in such an event the resulting differential business advantage in the pursuit of gain becomes an asset, capitalised on the basis of its income-yielding capacity, and possibly vendible under the cover of a corporation security (as, _e.g._, common stock), or even under the usual form of private sale (as, _e.g._, the appraised good-will of a business concern). But the regime of business enterprise has not only taken over various forms of institutional privileges and prerogatives out of the past: it also gives rise to new kinds of differential advantage and capitalises them into intangible assets. These are all (or virtually all) of one kind, in that their common aim and common basis of value and capitalisation is a preferentially advantageous sale. Naturally so, since the end of all business endeavor, in the last analysis, is an advantageous sale. The commonest and typical kind of such intangible assets is "good-will," so called,--a term which has come to cover a great variety of differential business advantages, but which in the original business usage of it meant the customary resort of a clientele to the concern so possessed of the good-will. It seems originally to have implied a kindly sentiment of trust and esteem on the part of a customer, but as the term is now used it has lost this sentimental content. In the broad and loose sense in which it is now currently employed it is extended to cover such special advantages as inure to a monopoly or a combination of business concerns through its power to limit or engross the supply of a given line of goods or services. So long as such a special advantage is not specifically protected by special legislation or by a due legal instrument,--as in the case of a franchise or a patent right,--it is likely to be spoken of loosely as "good-will."