2) I don't know what your setup looks like, but renting a dedicated server off of Hetzner takes a few minutes, maybe hours at most.
My personal opinion is that most workloads that have a load balancer anyways would be best suited to a mix of dedicated/owned infrastructure for baseline operation and dynamic scaling to a cloud for burst. The downsides to that approach are it requires all of skillset A (systems administration, devops) and some amount of skillset B (public cloud), and the networking constraints can be challenging depending on how state is managed.
I expect the latter
Of course it really depends on the application, but if you host something like a streaming video service where bandwidth is the main factor, you can quickly reach a point where self hosting is cheaper.
With the cloud, that DDoS can bankrupt you by causing you unconstrained bills instead.
It's interesting as it seperately lists price for 24x7 support.
CHF 111 ≈ $129
Agreed that either way it is way cheaper than cloud bandwidth.