To be fair I’m not completely sure, I’m not a node provider so i could be wrong, I assume the HW must be owned by the provider, having to pay a high entry price means they are less likely to act in bad faith cause they’d end up losing the initial investment.
Even in a datacenter (with camera) there is a risk that the servers got compromised.
Indeed, I suggest you to read this post: Long term R&D: TEE enhanced IC (proposal) - #14 by lastmjs
As far as I understand I think this could slow down the decentralization.
Depends on how you define decentralization, currently there is a big backlog of providers waiting to be approved, that is cause providers are paid a flat monthly fee, regardless of node usage, so if Dfinity were to add too many nodes at once and they end up sitting there doing nothing, we would have higher token inflation without any benefit.
Raspberry Pi configuration
What do you mean?