The Switch is on its last legs anyway, and the successor will reset jailbreaking/emulation progress back to zero.
I think part of it is that Steam offers more than just games; it's a platform for mods, you have friends, there's the Steam community, early access Steam games, Steam cloud, etc.
I think you're right that most people just don't even bother with the effort to pirate stuff in general, though. When I've been asked to, I've shown family members multiple times how to pirate media using a torrent client, but they end up forgetting and don't bother to do it by themselves.
It is possible, but in the past Nintendo didn't reset.
Wii-U, 3DS and Switch share some parts in common still.
I expect the next Switch to be powerful enough to make emulation difficult, but we'll see.
Its's just less work has been put into 3DS emulation atm, nothing else.
Some of the 3DS citra emu devs went off to focus on Yuzu iirc, but lately citra is more active again.
Jailbreaking yes, but emulation? I wouldn't be so certain, it's still the fundamentally same, mainstream CPU/GPU family just with more beef.
The most pressing challenge is getting game cartridges to a point where they can be decrypted.
When I'm able to significantly speed the game up, then I'll consider emulating it.
The problem is that I often play games like RPG's that like to make you sit and wait on load screens and animations, speeding it up allows me to experience the game in far less time.
I think you overestimate the willing of most people to play on emulators.