I think you are missing how this would work. The scammer wouldn't scoop up the proceeds if it was a small account you were looking up, only if it was a whale. This is to prevent someone from figuring out it was a scam with a small account and only gain a few dollars from the scam.
I think you are missing something. If you have a wallet with very little or no money attached to it. And the you check for the correspoinding private key. If you find it - you "know" it works and then _might_ be inclined to try the key for a more serious wallet. But if not, then you know this site doesn't work and would have no inclination to try another key. If you enter important passwords or keys into random websites then this isn't about incentive but mere stupidity.
