The problem with a "knowledge economy" is that automation can basically take over 95 percent of it. You need a balance of services and manufacturing and agriculture, and the first world knowledge economies have been outsourcing the later two to cheaper third world countries and teaching their youth that getting their hands dirty is beneath them. Anytime someone brings up plumbing or welding or some construction work, there's a group here that always responds with "Back-breaking! No! Undignified!".
Fine. So starve then. You're not getting your UBI or a lifetime welfare state. So I suggest you learn a skill that can't be replaced with a glorified Google script, or hope your parents have saved enough money to support you on their couch while you protest the indignities of spreading drywall or operating a backhoe.
Yep. In the 1998-2005 era I'll admit I was an idealist who thought Information Wants To Be Free and the automated future would be like Star Trek where molecular resources can be manufactured into anything on demand, leaving humans free to be poets and philosophers or whatever. By the end of that decade - 2010 - the trend extrapolations were unmistakable to anyone paying attention. If old industries can be "disrupted" and automated/distributed with appy apps that love apps, then after a short expansion period the making of appier apps will become the largest remaining labor-market of the economy, and thus automation itself will become so valuable that it is the must lucrative next target for the Disruption gold-rushers.
That "knowledge economy" we were promised in the 1990s simply cannot be sustained for more than a bubble interval. A knowledge economy in actual practice is just another MLM. Which is also how college costs exploded even as college benefits imploded. We subsidized/incentivized a system where people are employed to sell wholesale supplies of information to other people who, after leaving college, find there's not much they can DO with that information other than become a professor and resell their wholesale supplies to the next Knowledge Distributor. The non-college version of this is the thousands of YouTubers generating YT revenue from telling you how to make $60,000/month setting up an Etsy shop, which was swiftly followed by YTers telling you how to make $60,000/month generating YT content about setting up a YT account to tell people who to set up an Etsy shop.
The entire "gig economy" of the past 10 years - which so often was presented as an answer to my predictions of permanent structural unemployment because it supposedly showed how appy apps were generating new employment - was in fact to me the clearest evidence that I was right. The gig economy is also ultimately an MLM. We can't all get paid to Uber each other to the grocery store on our day off from driving for Uber. We can't all use our OnlyFans income to subscribe to everyone else's OnlyFans. Markets consume resources as fuel, and conservation of matter/energy applies. At some point someone has to import new resources to the economy, whether that's materials, or knowledge, or people, or technology, or, usually, conquering another territory and thereby acquiring its resources for "free".
Thus, a "knowledge economy" isn't strengthened by recursively self-accelerating technology automation. Automation is actually the Achilles Heel of a knowledge economy. It is the runaway nanites that consume nearly all possible labor-value and turn every potential worker - the white collar lady with the Ph.D. and the blue collar dude driving a cab into indistinguishable grey goo, incapable of generating/injecting any more fuel into the economy and therefore summarily discarded.