Thoughts
The thing to recognize about web3 is that the transactions require transactions fees. Because of the way that the networks currently work,
the price of bitcoin or ETH increasing means that transactions are more expensive. This is also inherit in all systems—more transactions means more computing power needed. So as the price of bitcoin or ETH increases, moving small amounts of cryptocurrency is disproportionately discouraged.
This creates a conflict of interest where an increase in web3 users is not always a bad thing. Most of the time, an increase in popularity is good for crypto people, but there is a downside.
The thing to watch out for is Crypto becoming a luxury product. In practical terms, this will look like when an asset (that is legitimately "valuable", by some definition of that term) is locked behind a crypto transaction fee that is prohibitively expensive. This is one success pathway for web3. But it's really hard to do that and also prey on people with less money.
In order for web3 to succeed in the other sense, where it becomes used more popularly than the web, then the price of ETH and BTC need to go down* so that normal people can actually afford to interact with it.
*Of course, people are trying to come up with other solutions, like side-chains or just super low transaction fees, but like, it's basically impossible to avoid richer-people having more control in your decentralized system, which ends up hurting poor people in one way or another. I feel like I'm not explaining myself very well because I'm relying on implicit assumptions that I'm not stating. Hm.