As an AI language model, I don’t have real-time data. However, I can provide you with a list of some of the top gambling operators known for their mobile betting services. Please note that the revenue rankings may vary over time and according to different sources. Here are ten prominent gambling operators known for their mobile betting services:
2. William Hill
3. Paddy Power Betfair (now Flutter Entertainment)
5. 888 Holdings
6. GVC Holdings (now Entain)
7. Kindred Group
8. Betsson AB
Please keep in mind that this list is not exhaustive, and the order may differ based on various factors such as region, specific year, and source of information. It’s always recommended to refer to the latest reports and market updates for the most accurate information.