It's almost ironic. Blizzard tried multiple times (and failed) to create some title that made a breakthrough in the e-sports scene.

Nintendo on the other hand had something without even trying, and could have monetized it to no end. But they decided to keep away from it, and took some effort to shutdown the usage of their IP for it.

I can sort of understand the rationale. They are very careful with how their brands are used. Contrary to other videogame companies, Nintendo lives and dies on their brands and IPs. It's their biggest asset, and the only thing ensuring they remain meaningful.