I'd expect a lot more corruption. Economic systems don't function at maximum efficiency due in large part to things that are uniquely human - namely greed, a need for power, etc.
The tax code is a good example. What's the most efficient tax code for our economy? Probably a simple one that fits on a sheet or two of paper. That's great right? Companies can direct all that capital tied up in tax compliance/avoidance and payment to more productive activities, government can shrink, etc.
But by doing that, you've done two huge things to those pesky humans that run the
system: completely destroyed the infrastructure built on interpreting and complying with the tax code (accountants, lawyers, lobbyists, schools, etc) - you've just fired 10 million people/voters (actually you probably made them nearly unemployable, as they were so specialized to begin with). And, you've removed one of the remaining areas of leverage and favor peddling that power hungry, reelection-seeking politicians have (carving out loopholes in the tax code in exchange for campaign donations).
So what happens - do we get an efficient tax code, or do we grow the tax code every year? No surprise, the humans tend to vote for their continued survival.
Another example that the video touches on is the driverless car. We have it right now, today. So why haven't transport companies started using them? Regulatory and legal impediments. Will we have them? Yes, but it will be unnecessarily delayed, creating market inefficiencies.
It will be a fascinating future - I have no idea what the world my kids will inherit will look like. The only thing I know is that where there are market inefficiencies, there will be entrepreneurship opportunities to exploit.