Impact on the price? maybe little. The possible impact would be,
- wallet developers being identified by regulators
- regulators asking these wallet developers any information about their users
If you're that worried whether a regulation asking information about these wallets will be implemented then you should probably start learning about decentralized exchanges.
I don't think developers have anything to do with it:
“This proposed regulation would, we think, require financial institutions like Coinbase to verify the recipient/owner of the self-hosted wallet, collecting identifying information on that party, before a withdrawal could be sent to that self-hosted wallet,” Armstrong tweeted.
It's just a bunch more KYC that means if you're going to withdraw BTC from your Coinbase (or whatever regulated exchange) account to whatever wallet, you're going to need to prove who owns that address first, regardless of whether it's custodial or decentralized.
Either way, I kind of feel like this is a worst case scenario kind of thing -- I simply don't see how they can implement this effectively. Even then, you could just prove ownership of some random Electrum wallet, then send the coins from there without restrictions. It's just going to be a bunch of red tape with very easy workarounds.