Plenty of businesses would buy multiple copies of business software and just open one and install that set on all their machines (in the 80's and early 90's).

Be careful with the games since many retailers would reseal them after the employees copied the disks or used them as demo's. Plenty of collectors seem to buy shrinkwrapped games and keep them that way, I generally open them up the second I get them and look inside (and make disk images of the software).