It will be interesting to see how the next 400 years will go. For a long time the US could just keep growing into new territories and absorb a lot of ambitious immigrants that way. It seems this phase is over. The US is now a grown up country where everything is owned already so it will be much harder to grow. The Trump success seems a symptom of this. Instead of just growing as the US had always done Trump's message…
We're in a brief moment where the internet exists, but has not yet disintermediated population centers.
Within 10 years there will be a new city born every week in the US with great jobs, great coffee, and "market housing" i.e. construction cost plus 50%. The property markets will collapse.
Along with this there will be a massive readjustment of wages in favor of workers. The average number of full time employees per corporation will go from 16 to 0.16. The Dow companies will lose 50% (only) of their market share over the subsequent 10 years to federated sole proprietorships and small partnerships, but the middle class will double in size, and population is still headed towards 10 billion, so big companies will grow in net revenue anyway.
From there you can start to see how we get to "everything owned"... 10 billion people and every one of them is extracting maximum utility from a couple acres (about the max area a single human can maximize utility of)... That's 20 billion acres of really "owned" property... Property you couldn't make an offer on without losing money.
We will get to "everything owned" in the U.S. but we're not close. It only looks like that from porches in boom cities.