I wish we could do this, but against Nintendo's billions we may struggle a lot.
Yuzu was making 30k/mo and their best option was to quit... we'd need an order of magnitude more supporters to even be able to consider this viable.
The closest thing we could maybe do is donating to the EFF, they're best suited to defend stuff like this. They prevented the RIAA from trying to take down "youtube-dl" for example, an archival tool supporting videos from YouTube and many other sites. The RIAA also used many of the same arguments that Nintendo used against Yuzu