The kodi / tidal integration is unofficial, and is free, and is an add-on to open source (and free as in free beer) software. No one can be seen to be profiting from tidal by having it. If tidal wish to, however, they could ask
for it to be taken down.
MC is not open source, and nor is it free as in free beer. If JRiver were to integrate Tidal, and continue to SELL MC, Tidal may have a pretty good case that JRiver WAS profiting off the unauthorised use of the tidal name and its associated properties. It could also open JR's IP (their closed source code) up to investigation, thereby compromising the whole point of it being closed source. Not good for anyone but a bunch of lawyers and probably tidal in the end.
Saying that, the kodi plugin just looks to be a python script, so there may be a way to get *something* into MC for those who know their way around python and willing to make the effort...