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The killer use case was roaming IPs, but I'd say the killer use case today is battling latency. A lot more people are computing remotely now, even on their phones. Even with 5Guw, I still get bursts of crappy latency. And now some people are using 5G as their home internet.

It definitely solves problems when traveling and dealing with crappy airport/hotel/AirBnB/conference wifi that is slow or overloaded.

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I used to use mosh when riding Amtrak and using the free wifi. Without it, I rarely could even stay connected long enough to run more than a command or two, but using mosh completely solved it. I had no idea people considered handling changes in the IP to be the primary use case.

Even my home wifi sometimes has enough packet loss to kill SSH connections. And if my computer sleeps for a even a quarter-second, yeah, connection dead.

Mosh means a lot less, "Sigh..." up-arrow, enter. A small thing, but why live with it when you can just not?

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