I'm living in a country without Apple Store. When my Macbook broke, I went to authorized service center. They replaced SSD. It took over a month. So if it would be my work machine, I wouldn't be able to work for over a month. This is just unacceptable.
If you are a professional it's unacceptable to only have one work machine and no backup machine.
What if it was stolen or broken entirely instead of "SSD needs replacement"?
Then there would be nobody to replace it for you (in a month or a day), but you'd still have work to do. At best you would buy a new one, set it up again, and lose a few days to get back on track while your customers wait.
And that's assuming you have the credit at hand then and there (and you don't need to do any market research, but can just grab a machine).
Backups (both hardware and data) or not, a month turnaround is still awful and unacceptable, and reason enough to switch suppliers. Companies that take business customers seriously offer same-day on-site service.
You can send in a computer to Apple for a turn around of less than a week in most cases. Because they decided to go to a physical location, it probably caused a delay. I'm not defending the store in any way but that definitely isn't the best place to go if you know there is not a store in your area.