We finally installed a whole house generator 26KWa-Kohler- natural gas- a little more than a year ago. After the Texas "big freeze" in 2021, I swore I would not go through that again (or the threat of rolling blackouts during peak summer heat, which is brutal here). Since it takes the generator a bit to come fully online--arguably in the tens of seconds, though the switch over happens in milliseconds, that’s obviously enough of a time lag to disrupt Internet service.
Since so much of what we have today is Internet dependent, including household alarms, security cameras, etc. (all with battery back ups), I bought a substantial Eaton sine wave 20 amp UPS. This way, the Internet signal is covered during the generator switch over. I’m less concerned about computer activity during a power outage than the security systems. (and fwiw, I had a pretty elaborate wiring scheme approved to avoid having my main hi-fi part of the same circuitry as the ATS for the generator; the hi-fi is not supported by the generator at all). One less thing to worry about and--no, I would not be listening to the hi-fi during a power outage.