How do DAOs make money?

As a finance professional, I'm curious to understand the mechanics behind how Decentralized Autonomous Organizations (DAOs) generate revenue. Could you elaborate on the various strategies and mechanisms DAOs employ to monetize their operations? Do they rely primarily on token sales, transaction fees, or do they have other innovative revenue streams? Furthermore, how do these revenue sources impact the sustainability and scalability of DAOs in the long run? Understanding these financial dynamics is crucial for assessing the viability and potential of DAOs in the broader crypto and finance landscape.