I feel like biggest advantages of using Bitcoin in online gambling platforms is to avoid some countries' regulations. It can be very hard to deposit local currency to bank account of gambling platforms. But its so much quicker and easier to do same with Bitcoin. Most countries don't follow Bitcoin transactions in such situations because its not exactly something illegal. Its legally grey area. It gives chance to many people around the world to gamble in 5 minutes.
You are right, by-passing countries regulation is definitely another good advantage of bitcoin to gambling platforms, if not for bitcoin, I myself wouldn't be able to gamble on international gambling casinos like stake.com and the rest, I probably will be limited to gambling on only local casinos in my country, this is because the government of my country have restricted international transactions on our local debit/credit cards, and also, transferring internationally take weeks and lots of documentation.
Making international transactions through our cards was the easiest for us, but now, we can't no more.
So indeed, bitcoin got us more advantage than we can ever imagine, most especially in the area of gambling.