When selling a software package that requires hardware, typically dedicated hardware (could be a VM), the buyer typically has to buy the server it will run on. So the total cost of ownership (focusing on the capital expense) includes the hardware in addition to the software.
For example, a $3000 bug tracking package might need a $1500 server to run on, total cost is $4500. The hardware is 50% of the software cost, or 1/3 of the total cost.
Of course, with open source packages, the ratio is inverted.
So the question is: does it matter? At what point does hardware expense affect the sale of the software?