You're totally, absolutely wrong about this. Key escrow does the exact opposite of what you think. It opens a total vulnerability that private criminals can exploit. No government on earth can keep escrow keys safe. They need to be used in order to unlock a message, and that means they will escape. “Backdoor” has only one meaning in this context…
In China you can get very cheap USB drives https://www.alibaba.com/countrysearch/CN/usb-flash-drive.html and Open Dime would probably cost less than those because they don’t need to store a lot of data. when they’re manufactured at scale they will be very cheap, and ubiquitous, especially if the design is licensed to other manufacturers, or even reverse engineered and cloned.
I have made the argument clearly why Bitcoin doesn’t need regulation and why it cannot be regulated in the USA. The problem here is not what Bitcoin is, but the fact that you and other misguided people merely want it, in spite of it not being required. You want it because you’re from the mindset that the government is needed to help everyone. You are who Bitcoin was developed to stop forever.
In Bitcoin, no one “holds” any money. And this is a Straw Man. If you have clients, and you have a contract with them, that contract is enough to protect them and lay out your responsibilities and remedies available. No new law is needed for this, and that is a fact.