That is a good question. They sell those CPUs to industrial clients. Note cases can be configured to be completely sealed for high-dust environments, and it is also possible to get industrial motherboards with connections that no regular user needs. The fanless market has a pretty good niche in factory deployments. There, lots of software is designed to run 24/7 on cheap CPUs.
Mac Minis, and in general most Apple products, tend to offer great value in the lowest configuration. But upgrades are expensive. It is a bit of the opposite situation. I have not used Macs for very long, and I prefer Linux, yet the cheapest Mini looks quite appealing. When Intel Core 2 CPUs entered the laptop market, it was a similar situation. The cheapest MacBooks offered really great value compared to competition.
Mac Minis, and in general most Apple products, tend to offer great value in the lowest configuration. But upgrades are expensive. It is a bit of the opposite situation. I have not used Macs for very long, and I prefer Linux, yet the cheapest Mini looks quite appealing. When Intel Core 2 CPUs entered the laptop market, it was a similar situation. The cheapest MacBooks offered really great value compared to competition.