- User demand for new systems hardware for different combinations of the price of hardware, the size of the installed base of new system users, and the amount of content available for the new system;
- User demand for new systems software for different combinations of the price of software, the size of the installed base of new system users, and the amount of content available for the new system;
- HW’s optimal response (price of hardware) to SW’s provision of content for the new system;
- SW’s optimal response (provision of content for the new system) to HW’s installed base of new system users.