I think it's reasonable to carryover retail investor protections to the gambling world. One market has much more history in taking advantage of the average Joe and as a result there are many sensible protections in place. If you can't withstand losing your entire investment, you probably shouldn't be able to place that bet in the first place.
Unfortunately, since gambling is only recently more accessible/prevalent, I think it's going to take a few mishaps to produce similar regulations.