So let me see if I get the general drift of most of your comments right: Without societies, censors or authority over us, we're all immoral and unethical?
What happened to individual choice? All you guys out there (used in a non-sexist way) are telling me that stealing is okay, provided you, taking the best suggestion I read before I stopped in horror, that you document your going along with it to simply CYA?
If I found myself in this position, I would take part of that same suggestion to document the whole problem. I'd make a list of all the software which should be bought to make the company legal. Present it to the boss. And if he doesn't instantly implement a plan to acquire it, look for another job if you need the paycheck - else resign immediately.
Morals, ethics and honesty - you have them or you don't and there's almost no ambiguity about it (you may be forgiven for stealing a slice of bread to feed your hungry child).
This philosophy still seems to me to be the best going: do unto others as you would have them do unto you.