World largest independent oil traders
Even then, binary options trading is still for fools. If you don't know that the broker (which is not an exchange) is a counterparty to your trade or what that implies for the trader, you have no business making the ignorant claims you just made.
At this point one might even posit you are a shill for the two sites, considering you are admitting you have no knowledge of any of the highly important concepts I just presented yet are still recommending people engage in binary trading anyway. But it doesn't matter in the end as you're saying it's not possible to trade profitably on either Betfair or PredictIt and that is objectively false.
It doesn't matter what terms you want to concoct as a justification for that position, people are doing it.