...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.
No, not really. Ever tried to store gold in your brain, to avoid confiscation at the border?
Hmmm. I was thinking of Greece and Cyprus where borders are porous. But if you wanted to move money from Germany or the like, then yes, you are right?