I know they're not the same, or even the same target market and demographic.. but can anyone explain why a VPS host like linode can manage to keep my VPS up for

I know they're not the same, or even the same target market and demographic.. but can anyone explain why a VPS host like linode can manage to keep my VPS up for >6 months without reboot, while AWS or Azure can barely manage 1 month? I know the whole "you're suppose to use availability sets for redundancy" or equivalent speak.. but there are a lot of times when this just is not possible, not to mention potentially doubling the cost when you do this