They DON'T get a decent rate of mining.
You need about 500,000 CPUs, proxied, to get a decent rate of mining equivalent on one single miner.
Your "theory" is called: "How can I get someone else to pay the mining bill for me"
The results of your "theory" would be pointless and produce next to nothing and cost "someone else" a lot of money.
Basically, it's called stealing. Hopefully you'll get caught.
WOW! Calm down laddy...
I don't have access to 100 pc, and this is an example, in theory, for me to better understand the basics...
Since when people became so hostile simply for reading a question which states in the THIRD LINE
just for education purposes - in theory - i.e.
NOT REAL