All the major streaming providers are also adding live content. Once they have the infrastructure built out and the customers, it’s relatively easy to add the live content.
Relatively easy is doing some heavy lifting. There's plenty of reports about the streamer's live content having piss poor performance. Getting VOD streaming to work correctly is totally different than live coverage streaming correctly. The only thing they have in common is the viewer using the same app to view it.
Years later, Netflix is still having issues. Maybe it's not as easy as you claim.