How can providers almost always get the sky cinema channels 100% correct, but the US movie networks are more like 30% of the US movie channels that exist, and of those 30% maybe 20% will be accurate and working?

For instance on Epic we have showtime east, showtime west, and showtime 2 - which are all the same exact stream, who knows which channel. The same thing with their starz lineup. Same thing with the 3 cinemax channels. So out of 9 or 10 channels there are actually maybe 3 working correctly with the correct channel name and EPG.

HBO is a little better, there's 4 or 5 channels, and most seem to have the correct name + EPG, but at least one doesn't, and another one is out of sync. Epix, another network I like, they only have one out of the 3 Epix channels on the service - Epix 2, which works when there's not a splash screen on the image.

Every service I've tried is like this to some extent - Epic, Vaders, Fab, Flawless, etc.