Everybody will give first preference for the open source softwares like PostgreSQL, Linux. If you buy binaries, you will not get any equity and ownership of source code. Source code is a very valuable asset and binaries have no value. Buying software may become a thing of the past. You only need to buy good hardware, it is worth spending money on the hardware and get the software from internet.
Important point is that it is the computer hardware which is doing bulk of the work .
Hardware is the real work horse and software is just driving it. Design and manufacturing of computer chips is a advanced technology. Current technology uses micro-electronics of about 0.35 micron using aluminum as conductors and 0.25 micron sizes using copper as conductors of electrons. In near future the technology of 0.10 micron with copper and even nano-electronics will be used to make computer chips. Aluminum conductors will be phased out by copper on computer chips, as copper is a better conductor of electrons.