Why can't you get multiple legendary Pokemon in USUM?

I regret catching those legendaries. I should had reset for a competitive nature. But why can’t I get multiple legendaries, if we can catch multiple Ultra Beasts?EDIT: there are also different universes right? so shouldn’t there be unlimited legendary if there are unlimited universes?

Pleaselog inorregisterto add a comment.

It has always been that way. Legendary Pokemon are exclusive and can only ever be caught once in a single copy of the game. Think of them as mythical Pokemon you encounter in the game (Besides Deoxys which was included in R/S/E and ORAS. Deoxys is still considered a mythical just to add to that).EDIT: For got to add the Ultra Beast Part. Ultra Beasts are different however . They are not legendary Pokemon (They do have considerable stats for competitive) that’s why you can catch more than one. Legends and UB comparisons(all are excluding phione and manaphy): Cannot breed (UB’s have this), Usually, if not, have a total base stat of AT LEAST 600 (570 for UB’s), and finally, can only be caught once (UB’s don’t have this). Hope I helped.

Because Game Freak said so.Edit: also, if people just started playing Pokemon, they would only expect 1 legend per game.