Mel Brooks famously observed in his 1987 film Spaceballs that merchandising was “where the real money from the movie was made.” A similar credo might be applied to the tech industry of the time. Add-on boards and peripherals were where the real money from the PC industry was made. Not that selling the actual computers was unprofitable, mind you, but even the major players like IBM and Apple understood that the success of their hardware was largely due to the ability of third parties to provide a wide range of (relatively) easy-to-install expansions.