Why should me, as the owner, be unable to fire people trying to unionize? If someone doesn't like a job they can leave. The union is anti-freedom - it restricts what I am able to do with my property (my business).
Even more fundamentally though, why should your employees care about your property? If you're worse off but they're better off, they should do it. Your wellbeing doesn't enter into the decision, just as their wellbeing doesn't enter into yours.
Property rights are the foundation of civilization. Please - go start your own commune as so many fantasists have and see how well it goes. I prefer to own my own stuff and keep thieves from taking it.