if I set out to hold a party every tuesday afternoon and have a budget of $100 per party, and a budget for marketing of $900 and use those $900 to build the social infrastructure then the cost of the party did not raise. The cost of awareness and infrastructure did.
You keep raising the point that a bitcoin transaction costs a ridicilous amounts of dollars to achieve and it's just plain wrong. The block rewards are a marketing tool to ensure that people build the infrastructure - not to ensure that people confirm the transactions. A single pi server can most likely server the entire network today if it weren't for the fact that the system is designed to promote building a system of a scale much larger than we actaully need in the first hundred years or so.
If an employee of a bank gets sick and the bank incurs higher management costs it doesn't mean that the banks automated service network suddenly got more expensive - it means that the banks employee management costs did. Bitcoins block reward is in a different budget, allocated for a different purpose and you mash them up and make it look like transactions in the bitcoin network are expensive. They're not.
Building the underlying global attack-proof infrastructure needed to get the other 99.9% of the population onboard is expensive. That's why there is a block reward.
