The way I see it, web3 requires a complete paradigm change in order to actually work, on any scale. In other words, we have to consider the psychology of it, not just the functional mechanics.
People are deeply resistant to change. The first automobile was on the road in 1886, but it wasn't until the 1930's that you really just had cars on the roads. The first mass produced mobile phone was on the market in 1983, but many people still had land lines "just in case," 30 years later. Same holds for the advent of the Internet, itself.
Point? Even after they get past initial resistance to change, most people try to use the new like they used the old. Heck, many of my customers (granted, quite a few of them are older) buy online, but still request paper invoices, which is a pre-online thing.
Web3 will be great, but we have to work past the underlying psychology of Web2, which has its roots in scarcity, which leads to fear, which leads to greed, which takes us right to the doorstep of what these ostensible "Web3" projects are doing.
And sorry, I don't have a magic pill for changing a psychological mindset. Time, perhaps, is our best friend...
I don't think Cars and Cell phones were about resistance to change so much as they were about the technology being ready for mass consumption. Sure, you could buy a car in 1886. If you were rich...but roads were crap if you even had anything that could be called a road. And good luck finding fuel. And the cars were crap too. A horse was more reliable, faster and cheaper.
And sure, you could buy a cell phone in the 1980s...if you were rich and even then the coverage was crap...and you had to carry something that weighed 10 pounds. And sound quality was crap.
Sometimes there is resistance to change but sometimes the technology just isn't ready. That's true of crypto today. Yes, ridding ourselves of centralized exchanges and managing our own wallets may be the the future but until there is an idiot proof way to prevent people from losing their keys AND keep them secure, etc. then it will never truly be mainstream.
No new technology is ready for mass consumption immediately. DVD players took over a decade to catch on with the public because 1) they were too damn expensive for the average person to buy at retail, and 2) most people were still married to the bucket seats at the local theater.
Change isn't about adopting new technology. The technology, in virtually every known case, is the vehicle to change. Cell phone usage required a shift in thinking about communications, but the technology itself wasn't the driver. People slowly began to realize that a phone could be more than just a phone. It could be an entertainment center and a multi-tool communication device rolled into one. Instead of just talking to people, you could text with them, watch videos, play games, listen to music, and a lot more. It's not just a phone anymore. It's an office you carry around in your pocket, with practical everyday uses. But many of the features you currently have on your phone came from customers asking for them. Originally, all you got was a phone that you had to flip open to use, and something they broke.
Web3 is on the horizon. If we're patient, it will be better 10 years from now than it is today, and more people will be using it.