Not have the profit margins? I have a client with a couple of child care centres, on good margins. Why not, if properly run? Why on earth should it be unethical?
Rule 1: If it can't be a ten bagger within two years, don't touch it
Rule 2: condition yourself to sell if it looks like it's had its run (even if it hasn't made the ten bagger yet)
Rule 3: If it has a p/e ratio, it is unlikely to be a ten bagger.
Rule 4: Never borrow.
Rule 5: Watch the global situation like a hawk. Then you might spot the GFCs when they come round so you can sell.
Rule 6: Steer clear of hedged commodity or PM companies
Rule 7: DYODD. If you can't understand it, don't buy.