It's very unusual to make new policies which suddenly alter market value of major, widely held investments by declaring their fundamental business model to be illegal.

For instance, if the Federal government suddenly declared all extant municipal bonds to be subject to tax, what would the reaction be.


It's very unusual to make new policies which suddenly alter market value of major, widely held investments [..]

Right.  I'm with you.


[..] by declaring their fundamental business model to be illegal.

Ummm, perhaps we need to buy everyone here a dictionary.  They did no such thing.  I sure hope income trusts aren't "illegal", anyway, because I own units in a bunch of 'em.