I have 3 services right now one is FAB (UK) the other is Redline (international/Arab) and the 3rd is Royal IPTV ( arab / International )
Redline and RoyalIPTV have some English channels but its mostly arab and asian and i have not once seen them get blocked or buffer or have any sort of disturbance while watching Bein sports. i don't mind the language as long as i can watch the football. you can't get monthly subs, its a year or leave it and i can see why as its never gone wrong.
So what makes them that much more reliable. i mean FAB is ... Was great but these guys are solid.
Since their most subscribers are Asian, fom infrastructure aspect is good to have server located at Asia's datacenter, latency is they key to streamline service. Asian subscribers will be directed to watch from nearest server, it's a concept of geo-ip load balancing.
Most of global IPTV provider only have one or two datacenter to cover the entire world. Plus they also overselling the service to gain higher profit.
Think about mass product and segmented product.