I really think you do not actually mean economy and there is absolutely no reason for satoshi to be educated in Economy. He/She/They just had a solid understanding of how the monetary shitstem works and what a possible solution might be. It is also because economy and trust are always combined. The whole idea about bitcoin is ofc also that there is no need for trusting any actors or participants, but that you can verify the information and how the system processes it yourself. Current economy; If you would not trust your supplier to make the transaction according to the agreement you had, you would not do business with it. But also; if you do not trust the central banks and governments to be transparant and have integrity, you would try to move away from the system (which is either really hard or impossible). In a decentralized economy; If a certain protocol, merchant, system, client etc… can not be trusted, it will simply be exposed once it reaches any significant scale.
Also, in the time the btc whitepaper came, there was already some period of global financial uncertainty. It became easy to quickly read up on criticism against the current monetairy system. Maybe in some circles it might have even been the main topic at the bridge club