>99.9% of the game is singles
>99.9% of portrayals in battles through the entire franchise is single battles
>Hmm, why don't people care about the official format where the battles are in doubles and it's a pick four out of six
It's a mystery.
Couple that with how other things like how much of a pain in the ass is to get a competitive team going (no matter how "easier" it has gotten it is still a pain in the ass to do), shitty prizes, shitty support, badly organized tournaments, shitty online, no place to practice the format in-game, no real ladder, the scene being a massive circlejerk, etc and you have a perfect formula for failure.