Honestly.

The biggest threat to Nintendo is no one but Nintendo.

because Nintendo has done more harm to their brand in the past 20 years with their cockheaded fucking behavior than any vaguely inspired game, knockoff, or anything else.

between their bullshit where they would file DCMAs against people who streamed nintendo games unless they gave half the money to nintendo

to their bullshit overuse of lawyers to the point they ended up DMCAing themselves over some people getting hold of..tears of the kingdom? i think it was, a day or two early.

And lets not forget just how shit and phoned in their core titles like pokemon have become.