Well never know because it doesn't doesnt happen. Here's the thing. Nintendo as a brand is just as strong as Sony. Their first party IPs sell the best out of everybody. But they refuse to make a normal console( well they did it kinda once with the gamecube but that was in the shadow of the PS2).Who would honestly buy a Nintendo console over PS/Xbox for GTA or Call of Duty though?
If Nintendo would make a device that's on par with the others and have a working internet ecosystem they would get third parties and would sell well. Right now they have the first party games. They are missing online infrastructure and Third parties. They would get just as much Japanese support as PlayStation because well Nintendo stuff still sells well in Japan