There were cloud provider outages that lasted a long time as well. They are far from frequent, but it's not like you are immune from it ever happening if you're

There were cloud provider outages that lasted a long time as well. They are far from frequent, but it's not like you are immune from it ever happening if you're using aws or gcp. Anyway, I don't think uptime is the main reason to use a cloud provider. For me, the main reason is the ease to expand. You can add and remove infrastructure quite easily. If course, you can do the same in a datacenter, but in my experience it takes planning ahead a bit more than you need with a cloud provider.