And many leagues are already getting there to a degree. Look at the Thursday Night Football games on Prime Video now. The streaming services are about to unload tons of cash on acquiring live sports as a method to attract new subscriptions.The only problem is RSN as we know it might not be a thing in 3 years. Sinclair who owns majority of the RSNs took a bath when it paid $10B for them. SBJ, has stated that Sinclair might sell the RSNs and the potential buyers will be NHL/MLB and NBA buying the RSN, if a sale is not there a bankruptcy filing of the SPV Diamond Sports Group will occur. So the better chance is the rest of the leagues will follow MLS model.
Also, this is Apple that the league is working with; they're going to be up for the challenge and be able to make this work. This isn't some brand new streaming service.