What monopoly? Obviously no exceptions. Homes are to live in. If you want to invest buy stocks or derivatives that don't tie up precious land and property while you wait to cash in. What part of this is outlandish or unreasonable?
Government is the glorious monopoly, no other monopoly is glorious. What if government wants to invest in housing? Ban it too? How about if they label it as low cost?
Yes ban it. Government shouldn't be investing in anything, that's a conflict of interest because then they will pass laws or enforce laws in a way that benefits their investment.