Bomberman Online is being worked on, and because it uses basically the same protocols as Outtrigger and Propeller Arena those two will follow suit once Bomberman is ready.
Street Fighter titles were only online multiplayer in Japan (Though Western releases had website and DLC support, they didn't include online play). Online multiplayer with Japanese titles is extra difficult due to how the Japanese phone system manually connected people. You'd have to emulate the entire Japanese phone network first, then the specific online play code (KDDI or DWANGO) before beginning to figure out each title.
It's not impossible, but it's definitely a long way off.