The only area that I can imagine which will be impacted by the split is RoomEQ...
The merger of Pioneer with Onkyo/Integra some years back (10?) brought with it MCACC - which on the Onkyo/Integra gear got rebranded as "AccuEQ" - This happened at around the same time that Audyssey disappeared from Onkyo/Integra gear, and may also have coincided with the exclusive deal that Denon/Marantz made with Audyssey (which removed Audyssey as an option).
One wonders whether MCACC was one of the main motivators behind bringing Pioneer onboard?
In any case, now that PAC have licenced Dirac, and bundled it into their AVR's, the licence for MCACC becomes far less important.
The question will be, what happens with the mass-market value category, where Dirac is not an option, and the more basic versions of AccuEQ are used? - Will AccuEQ with its links to MCACC disappear altogether? Will Dirac be extended to cheaper models?
Lots of people don't even bother to try out AccuEQ, as they have Dirac and go straight to that - which in many cases is a shame, because AccuEQ/MCACC works very well, and is a lot easier to set up than Dirac.
It does a good job too! - I think ultimately, and for difficult situations, not as good as Dirac... but in perhaps 80% of setups, it is probably on a par.