Gosh. OP made me sad with his thesis.
"1. For owners, work is optional."
... As an owner I wish this were true. For me and most owners I know work is mandatory, and its 60 hour weeks and a lot of sleepless nights. There is no safety net. There is no unemployment. I get no workman's compensation. I have no employment law protections. Its, as one HN comment said some time ago, "a suffering contest" a lot of the time.
"2. ...your stuff will keep on making money forever."
... Again, I wish this were true. Lifetime income producing investments are hard to find where volatility, fees, inflation, taxes and life's circumstances don't erode value. Sure, the truly wealthy are set. But most business owners are not truly wealthy, and the exit strategies just aren't there in many industries.
"3. We can get entrepreneurship without the enormous rewards to ownership we have today"
... Anyone whose dealt with the day-to-day grind of owning a business would be especially offended by this comment. A firehose of pain, suffering and risk flows to the owner in the form of litigation, regulators, employees, vendors, customers, bank officers, etc., etc. I've equated it to a "lazy susan" dispensing aggravation in every conceivable form. Its the reward - if you can get it - that makes it worthwhile. Try just getting divorced as an owner and you become an instant convert to rewarding ownership.
Yes, rent-seeking monopolies are bad. Yes, more needs to be done to create opportunities for wealth creation by employees - to give them the freedom to say "no". No, punishing ownership isn't the answer.
UPDATE x2: I'm really not confusing types of owners. The author's thesis is broad not only in the article, but in his works in general. Access to passive income investments (eg. REIT's) is among the few places small business owners can go to rent-seek. Rent seeking is bad under a few sets of conditions but doesn't deserve author's indictment.