Yeah, we run a fairly busy systems on sqlite + litestream. It's not a big deal if they ae down for a bit (never happened though) so they don't need failover and we never had issues (after some sqlite pragma and BUSY code tweaking). Vastly simpler than running + maintaining postgres/mysql. Of course, everything has it's place and we run those too, but just saying that not many people/companies need them really. (Also considering that we see system which DO have postgres/mysql/oracle/mssql set up in HA and still go down for hours do a day per year anyway so what's it all good for).