If Nintendo waits a long time for a Switch successor, what do you think will happen?

[Bandorr]

Probably cloud gaming. It already feels (IE I haven't made an excel sheet) that they are missing out on a ton of third party games. And the others they are getting are "cloud" versions. So that would continue.

The game boy color wait for it.. brought color. The difference between black and white and color was huge. From 1080 to 4k? Not really. It is nice for some big games, but nothing Nintendo is doing.

The rest I'm not sure anyone would mind. They would still release first party games. People would still buy them hand over fist.
It would just come down to third parties deciding if it was the time/money/effort to port a game to system that old/under powered.