Yes exactly you can get an idea.. everything is worth trying, you will get an experience.
You're talking about arbitrage, you're about 4 years late to the party. 2006-2009ish a company out of Canada was doing $100M (profit) a year doing this. They bought a large Domainer's portfolio of 100K Domains for over $160M, parked them all with Company X while paying Company Z to send traffic (PPC).
Many safeguards are in place by G/Y/etc that prevent arbitrage from taking place these days.
I've heard that there are companies that are still doing it today.... not sure if its true though.
The practice has been banned by the G/Y/M for a while now. If it's being done it's probably on a very small scale with a lot of infrastructure in place to bypass all preventive measures in place. The cost to pull it off now, from my understanding, doesn't make it cost effective. But where there is a will there is usually a way, I'm sure someone out there is getting away with it by working a loop hole.
I can only imagine the effort. However, if the cost is so high verses the return what's the point...?