The games on Switch 2 are $70.  The big 1st party S2 games are going to be $80.
And Nintendo hiked the price of big S2 games $10 from the last big Switch game.
I wouldn't bet on Splatoon being $80.  It's not quite under the big franchise tent.  Depends on where they draw the line tho.
  AC certainly would be $80.  AS would Smash.  As would Zelda.  And as would Super Mario.  Possibly Pokemon I suppose although that's  technically not Nintendo.
The human element will fold like a cheap suit.  IT's $10 more.  And the games that will be asking for $10 more are  easily the most polished games on the planet of their scale in my experience and are their best selling franchises.
Also no one believes anyone owning a Switch 2 early on is going to draw the line in the sand at $10 extra for these big games if they want the games and if they otherwise are paying list for the $70 games.  
 
Now some of like us like myself didn't try to pay list for Nintendo games.  So I imagine I will largely behave the same way for S2.
I actually think $70 for some of the lesser Nintendo games is the bigger hurdle if that's the standard pricing across everything.