Is Third Party Productions that is supporting Shenmue. The ones bringing Yakuza 5 to the west (Digital only) the ones that brought USF4 to PS4 (Digital Only). Its a game division for ports and localizations of nich games that dont have alot money to spend.
All those uninformed sites, made it look like they only needed the 2M and Sony would invest the full project. Thats not the case, Sony is helping bringing the game for PS4, and thats all. PC version have other investor. And if MS and Nintendo steped in they cold also have the game on they own consoles.
Note, that im as uninformed as those uninformed sites.

But this is what I undertand the situation stands.