After talking one by one to some web3 / parity members I decided to raise public awareness of the following topic:
TL&DR: Kusama validators are not economically sustainable in the long term.
To show it I just placed together expenses and profits of my own validator:
https://hackmd.io/@DerFredy/SkH2gWxZP#/
The efects for the network in the long term are difficult to measure/predict. A trend to invest fewer and fewer in the infrastructure would lead to an inestable network.
The need to increase up to 1000 validators for parachain activation would also lead the problem get worse.
I would love to see some sugestions from the community regarding this topic