...snip...
But worst come to worst, people who own those assets can sell them and convert the proceeds to bitcoin, too. Then if things get too bad, perhaps they can emigrate elsewhere.
They can already do that with gold or any other commodity. The thing is, that would be selling at the bottom of the market. Most people won't move country at all and those that are willing to move country rarely include the asset rich classes.
For that class of person, where Bitcoin does feature is if you are old and facing the end. Sell your assets, convert into Bitcoin and distribute them among your heirs. Your family thus avoid inheritance tax and none of them have broken any laws. But that's off topic to poor Ayn Rand.