Nintendo’s console might be the only place to play the game in the first year after the release.
Podquisition’s Laura Kate Dale has some interesting info about the possible fate of Beyond Good & Evil 2:
BGE2 codename is Odyssey. Exclusive to Switch for 12 months only, retail and digital versions. after 12 months digital on PS4 and XB1.
— Laura Kate Dale – Mastodon "@LauraKBuzz@tech.lgbt" (@LaurakBuzz) January 3, 2017
Laura was originally a source of information about the next upcoming console from Nintendo so it’s a safe bet her info is 100% proper.
It’s worth mentioning that Beyond Good & Evil 2, codenamed Odyssey, is expected to release on PC, XO and PS4 after a period of 12 months, in digital form. It’s possible that the game will work as a semi-reboot to appeal to new audiences of Switch players.