[dubcanada]

The better question is why does he not build his own OS. He could build his own OS and make his own computer parts with his own tools and machinery and nobody would ever be able to access his BTC ever again.

He would probably need to invent his own internet though.

[Piskvorrr]

That's the beauty of the open protocols: you can make anything talk HTTPS over TCP/IP.

This, of course, is quite an academic worry in comparison to the gargantuan quest "bootstrap yourself from raw materials to a computer...and don't make any mistakes along the way."