In a CIVILIAN context, the odds of needing more than 5 shots of .38/.357/.44 to defend one’s livelihood and physical well-being have been statistically shown countless times to be MORE than enough in the VAST amount of cases.
In short, for the armed citizen, revolvers do JUST fine.
Revolvers also gave other benefits for civilian shooters. Easier to check if loaded, more reliable under certain conditions, more tolerant or stagnitible storage conditions, and able to utilize civilian oriented rounds such as snake loads with efficiency.