Inflation funding is where things get interesting. It allows economic rewards that are otherwise unthinkable. Remember, if Ether holders believed an upgrade (ex: sharding) would make the price go up by >10%, they’d be happy to pay close to 10% of their tokens for it. That means Ethereum could crowdfund a $3bn feature bounty by inflating the number of ETH by 10% and pay the newly created tokens to the creator(s) of the upgrade. This is somewhat analogous to taxes: everyone in the community chips in to fund common infrastructure (ex: roads) which no one would build alone.