parts of Europe, Africa and Asia had Worldspace.
Worldspace is defunct, but was too expensive for Africa. Receiver equipment was scarce and expensive. It was only successful in India, but that wasn't enough.
Sirius and XM merged in 2008 to form Sirius XM. The merger was done to avoid bankruptcy.
SirusXM uses Geosynchronous satellites as latency isn't an issue. The SXM-10 is at 116 °W, so even in Portugal & west of Ireland it's well below the horizon. Practically even with a 1.2M dish the limit in the West of Ireland is about 55 °W. New York is 73 °W, West of Ireland about 11 °W
https://en.wikipedia.org/wiki/1worldspace
https://en.wikipedia.org/wiki/Satellite_radio
SirusXM broadcasts would be illegal in Europe.
SirusXM radio uses the 2.3 GHz S band in North America for nationwide digital radio broadcasting.[6] MobaHO! operated at 2.6 GHz. In other parts of the world, satellite radio uses part of the 1.4 GHz L band allocated for DAB. It's not actually used for DAB, only VHF Band III is used for DAB (parts of 175 to 277 MHz and only terrestrial).
1.4GHz is also used for other services in Europe and World such Satnav.
In theory a wide beam aerial can illuminate about 1/3rd of the globe, but the power needed would be massive.