Those are probably accounts for sure bets, or dutching.
You cover all the result variations in different platforms. At every possible result youre gonna win. Its not a huge amount, but you will win. When the operators discovers that you are doing it, they limit your account and sometimes you get banned.
Yes, you are write. But even for betting from my dictations (where there is delay) bet365 is paying ALWAYS money. Even if you will have a scout on stadium and that scout will work for you and make e delay with intension, bet365 will pay your money.