It is clear that the old business model didn’t work. So they are trying something else. Will it make OS better? Maybe, maybe not. If the business plan does not work, it for sure does not get better.
People hoping for Jolla to die so that Sailfish becomes FOSS is just utopia as well. Some company will buy the closed assets if the company goes bankrupt and probably use them for some closed source product. Then Sailfish just does not exist anymore.
The very reason why things like VoLTE has been ignored is exactly the old license model. It would be finished already if it generated any meaningful revenue. No company would ignore vast majory of their customers if not working on something made a dent in their business. Same reason why Qt was never upgraded: it made no business sense. The actual customers prioritized/wanted something else.
So you either choose to support Jolla with their new business model, do not use paid features, or move on. I personally made an ultimatum that I would not use sailfish until the Qt stack is updated. I intend to keep that promise.
If they suddenly do it, I am happy to shove some 5euros to their direction and maybe buy some Xperia to run it with.
And to be honest, the raise of AI might be a great opportunity for Linux based phone. If you have the hardware to run the basic models, more open system than iOS or Android will allow you to do many cool things.