Sure someone could randomly guess it but not likely. You don't need to have or know a private key to generate a valid checksum bitcoin address that can be sent to.
I just created several trillion “disposal” sounding addresses and started sharing the one that I guessed a private key for. There’ll be some real surprises in 2025!
If you can generate the private key to a 27 character or longer English readable Bitcoin address then you can use the same magical technology you possess to earn far more than $1 billion USD.