MASN's biggest problem, IMHO, is the lack of streaming options. Other than the DirectTV package, which runs about $115 a month with RSNs the last time I checked, there are no options other than traditional cable.
The problem is if all the RSNs were on YTTV, then YTTV would be over $100 as well. Even if they were on YTTV, it would mean 3.3 million subscribers vs the 2.9 or so they probably have in 2024. It would stop the bleeding a bit, but not by much.
RSNs on live tv bundles is not going to be the future of local sports TV.