I think we can end discussion here because what you wrote is completly not true.

Do you even know what P2P stands for ? Do you know that you use P2P every day and all the time, for example by using HTTP2/QUIC.
You need 0 resources to run P2P network.

Cloud computing costs are way higher than colocating server anywhere. Many companies are moving out from cloud after facing high costs. The only place cloud is shining is when you want to spin up many resources for a short period of time. And that is because we don’t have kind of computing power provider on the market where you could spin up many resources from many local computers.

Do you even know why cloud took of 20 years ago ? Have you been using internet 20 years ago ? Compare connection speed of local houshold from 20 years ago with speed right now. Compare mobile internet plan and think how it changed.

You have no idea what you are writing about.