Many people start coding at a young age. Imagine your kid having to report their dapp to the IRS. It's not about the money. It's about the control.
The situation is probably worse for adults. Why go through the hassle of developing dapps when it means dealing with the IRS and potentially jail, etc.? Personally I've abandoned working on completely harmless dapps because of threats from the state. It's stifling for independent development.
On the other hand, when people compare this to China banning mining, I think the USA is far friendlier to crypto than China, because, as the ascending fiat superpower, China has much more to lose. As the dollar continues to devalue, the USA would most likely prefer a future based on Ethereum rather than the Yuan.