MakeMKV has an effectively perpetual free trial right now. It's not like old shareware were you have to pay after a month but rahter that you have to feed it a new free activation key every month and maybe wait a couple of days for one to be posted.

That can change (and the official communication is that its only free while in beta) but my guess is that the free beta is the main thing holding back alternatives. MakeMKV does solid work but it's not rocket science and a lot of parts (like all the complementary LibreDrive / UHD firmware work) doesn't even have a paid license check at all.

> I fully expect Blu-ray to completely die off in a few years.

I don't. It might continue to shrink and thereby get more expensive but the distributor market is still very healthy and has more active competition than movie production itself. The biggest danger is disc production but I don't think its impossible to shift that over to a BD-on-USBFlash or whatever else is convenient if needed.