What advantage would a protocol based on shifting machines have over something much cheaper like random number generation for say HTTPS communication? At the e

What advantage would a protocol based on shifting machines have over something much cheaper like random number generation for say HTTPS communication? At the end of the day, you'd fundamentally want the possibility of people guessing to be close to zero no matter what method you chose. So, the question boils down to how could the idea of disposable VMs/containers be better than simply using better primes which use much lesser power and give a greater throughput?