Most managed-WordPress hosts advertise how many support requests they deal with. Here's ours: 473 tickets in the entire history of our helpdesk. I'm not rounding that up, and I'm not hiding it behind "thousands of customer interactions".
Two things keep that number small. The platform mostly stays out of the way, so most weeks there's nothing to raise a ticket about. And the customer base is small enough that I still read most of them myself. When something does break on your site, it isn't sitting in a queue behind ten thousand others.
Across a recent sample of eleven tickets the median first reply was under five minutes. One memory-limit problem came in at 22:52 on a weeknight and was answered at 22:56. The customer rated it five stars. Another arrived at 23:21 on a Saturday; by 06:15 the next morning the customer had a screencast video walking through their email setup, recorded for them specifically.
It isn't a one-man band, either. Mark, Mike and Pippa all answer the desk. And we'll tell you when something isn't ours to fix: when a WordPress SMTP problem turned out to need a proper transactional mail service, we said so and pointed the way rather than paper over it. When a customer registered the .org of their domain by mistake instead of the .com, we re-registered the right one at our own cost. "These things happen," was the reply. "I've done that myself."
Low volume isn't a brag about being tiny, and fast isn't the same as round-the-clock. We're a 7-day desk with long hours, including evenings, weekends and bank holidays, not a literal 24/7 call centre. The data centre is monitored around the clock; the people answering your ticket just happen to work late a lot. The replies above are normal for us, but I won't dress them up as a guaranteed service level.
The reason customers pay for managed hosting is so that when something goes wrong, a person who knows the platform answers fast. Four hundred and seventy-three times, that's what happened.