Is it that land is no longer valuable, or because land is increasingly only available to a smaller portion of the population? (I'd need to find some data to back this point up...)
The money simply isn't available anymore for the next round of young families to begin buying property like it was generations ago. This allows land to pool into fewer hands and be less economically available.
Also, I'd argue that since capital is so cheap right now, investors and speculators are looking for new places to invest and hence digital currencies seeing the spike they are.
The land is becoming (worse than) worthless (and can become an albatross cost/baggage, e.g. property taxes as the nation-states are dying and will tax the hell of anything they can), because a major point of my blog is that the marginal cost of production for agriculture (and anything mass produced in a factory) is trending towards ZERO (and even below zero so that it pays to not produce that way!). I did not emphasize enough to click the links in my blog such as this one which links to my prior comments about Rifkin’s Zero Marginal Cost Society.
I wrote in this blog:
(make sure you scroll down to the blue highlighted text after clicking above link, if it doesn’t automatically scroll to is)
The other major point of this blog is that the nation-states existed only because agriculture (and thus land) was valuable. The raison d'être of the nation-states (and State religion) was to coordinate those borders, protection, transport, etc.
Note my first link in this comment also documents the coming Mini-Ice Age which is another factor in making land worthless during this epochal economics shift. Even though land that is still able to produce food during the coming Mini-Ice Age will be more valuable than nonarable land, it will also likely be subject to conflict over its control and usage. Much better to shift to hydroponics for food production, since cost of food is become a minor component of our costs in the modern era.