Canít we buy a software package for short-term planning?

Because business strategies differ not only across companies, but even managements, it is difficult to conceive of standard software package for short term planning. Off-the-shelf packages are few and expensive, and have not been successful because of their inflexibility, lack of consultancy support and a general lack of methodology on tactical planning. Because technology for tactical planning is still inadequate, currently the vast majority of Marketing and Finance meet their planning software requirements from spreadsheets, which are severely limited because of lack of database and programming support.